whats a good OC for a 4830?

[error8]

I've used Crysis warhead benchmark tool in the past, while overclocking and I can tell that the ice level, with 8X AA is extremely intensive for the GPU and especially on the video ram. It can spot any bad memory clocks right from the start.
Furmark is also very good to stress test your videocard, but it does seem to get the temps a little too high then any game on the market and that feels a bit unhealthy for the card. I mean there is nothing on this world that can heat up my VRMs to 106 C as Furmark does. The extreme burning mode it's just a killer. I would avoid that if you want your card to live.

 

[Rifter]

I will be purchasing the crysis maximum edition in a week and i will do more xtensive testing then, but for now it plays the demo fine, i have tried it at 4x AA and 8x AA but it bogs down sometimes, smooth at 2X AA though, at 1360x768. Great card for the cash paid as i didnt want to wait for 4770. They say the 4770 will OC better but i dunno im haaving great luck with the 4830.

 

[videogames101]

The funny thing is, people still claim ATI cards don't OC well

 

[Tempered81]

id rather have the 4830 over a 4770. This is my first impression, unless initial 4770 reviews and ocing results change my mind.

4830 starts off with very low stock speeds, whereas a 4770, even though 40nm is already at the speed of a maxxed out 4830. 4770 can match 4830/4850 performance levels even with 128bit bus because it runs at 4870 speeds. I dont think it will be able to do a 30% oc like rifterruts 4830 is doing. It would have to oc to 1000mhz in order

 

[Rifter]

Update, i got fallout 3 and have done some testing with it now too, It does artifact after a few hours with my core at 835, green pixels after a few hours usualy in the shadows, i hove since lowered it to 805. and just got back from a few more hours and no artifacts, i was playing at 1360x768 with very high detail and 4xAA and it was smooth, didnt slow down at all that i noticed but i was used to playing the game on PS3 and it was alot smoother and better looking than that(on the same LCD TV). I dont know many FPS as i did not know how to display the FPS. Also i have put all my case fans to 100% to see how far i can push this thing, its loud but i have a 500w 5.1 system i use when gaming so its not so bad. I need a fan controller so i dont need to open my case to change my fans all the time. For those of you that are just using the CCC and want to get over 700 rivatuner is easy to use and simple and will let you go to 865 core if your chip can handle it.


Now whats the best aftermarket cooler for this card, i care only about the GPU i dont intend to OC the memory? i dont care if it takes 4 slots as i have nothing else below it in the case.

 

[cbn]

Doesn't this card have the same cooling as the 4850?

If that is the case then it would be easier to push 640 stream processors than 800 under the same conditions.

 

[kmmatney]

Originally posted by: Rifterut
Update, i got fallout 3 and have done some testing with it now too, It does artifact after a few hours with my core at 835, green pixels after a few hours usualy in the shadows, i hove since lowered it to 805. and just got back from a few more hours and no artifacts, i was playing at 1360x768 with very high detail and 4xAA and it was smooth, didnt slow down at all that i noticed but i was used to playing the game on PS3 and it was alot smoother and better looking than that(on the same LCD TV). I dont know many FPS as i did not know how to display the FPS. Also i have put all my case fans to 100% to see how far i can push this thing, its loud but i have a 500w 5.1 system i use when gaming so its not so bad. I need a fan controller so i dont need to open my case to change my fans all the time. For those of you that are just using the CCC and want to get over 700 rivatuner is easy to use and simple and will let you go to 865 core if your chip can handle it.


Now whats the best aftermarket cooler for this card, i care only about the GPU i dont intend to OC the memory? i dont care if it takes 4 slots as i have nothing else below it in the case.

You can install ATI Tool to display the FPS (and other info such as temps) on the screen. You can use it to overclock, change fans speeds, etc... as well - it's basically like Rivatuner, but I thinks it's a lot easier to use.

I'm think I might want to lower my memory overclock and see if I can get more from teh GPU. I'm at 700 core, 1065 memory at the moment. I'd gladly go down to 1000 on the memory if I could get the core to 800!

 

[Rifter]

"ATITool will only work on Windows 2000/XP/2003 (64 bit versions are supported)"

Thats on there website, does it work in vista 64bit?

 

[error8]

Originally posted by: Rifterut
"ATITool will only work on Windows 2000/XP/2003 (64 bit versions are supported)"

Thats on there website, does it work in vista 64bit?

Of course it does. I'm using it on vista 64.

 

[Rifter]

I tried the latest version i could find, .27 beta 4 and it wont let me OC let alone control fan speed or anything complex, the artifact tool works but thats about it, i will try the .26 final version.

 

[doubleOseven]

The new version of the Sapphire 4830 (with DVI, VGA and HDMI output) comes with Samsung memory, vs. the older 4830 version (with dual DVI and S-video) which had Qimonda memory. I'm not sure if it's true, but from some accounts, the newer version, with Samsung memory overclocks much better (is more stable) in the RAM department. However, the new card isn't as feature packed (missing the S-video connector w/ composite out capability etc) as the new card -- so it's a trade-off.

 

[way2fast91]

Originally posted by: doubleOseven
The new version of the Sapphire 4830 (with DVI, VGA and HDMI output) comes with Samsung memory, vs. the older 4830 version (with dual DVI and S-video) which had Qimonda memory. I'm not sure if it's true, but from some accounts, the newer version, with Samsung memory overclocks much better (is more stable) in the RAM department. However, the new card isn't as feature packed (missing the S-video connector w/ composite out capability etc) as the new card -- so it's a trade-off.

This might be true, I haven't looked "under the hood" but my older version doesn't seem to oc as well as some peeps with the newer HDMI revision. I tried using rivatuner this weekend to push it and all I could get stable in L4D @1080p/high settings was 720/950. Memory at 975 got mild arti., at 1000+ serious arti. GPU at 750+ had some load screen issues and ATI reported GPU failure. Keep in mind I didn't set the fan speed manually, I had it on Auto. I might try this test again and this time, bump the fan speed up manually to see if it makes a difference. Results of the test though.... I am incredibly happy with the smooth performance/fps/graphic detail/low cost from this card in L4D.

 

[kmmatney]

Funny, my HD4830 is not stable at all past 700 on the core, when using Furmark. However my memory gets up to 1065 using the CCC Auto-tune. Lowering my memory to 1000 doesn't help the core get any higher. I'm going to edit the BIOS to apply more voltage to see if that helps my core go higher. I know that my card's inability to go higher than 700 is not due to heat - the card never goes above 55C, even when it crashes when set to 710 on the core. My memory speed is great, but I'd rather have more core speed.

 

[koumdros]

ok, this is the most relevant thread i found here but i want to hear some oppinions even if it si really old.

I got the same card, and whenever i try to use the auto-tune in the CC to overclock it, everything goes to hell:

for some time all i see is stripes i screen, and every 3-4 minutes it starts again, presumably trying the card at ever higher frequencies. At some point after 12-13 minutes, i get a BSD and the computer eventually restarts... but as soon as it gets into Widows again, instead of getting back to stable frequencies it tries to continues testing at high speeds and it crashes again, and again, and again


the only solution i have is to go into safe mode, uninstall ATI drivers, then restart the computer , uninstall the card from the device manager and reinstall card and drivers after a restart.


If i try to do a manual overclock test, it crashes in the same way even if i raise core or memory speeds by as little as 5 Mhz, even though using riva tuner to monitor what the hell CC was doing vs the "auto-tune" I i saw that it went up at least 70 Mhz before it locked and threw the BSD.


any ideas on what might be wrong? I mean, ok even if i got a card that doenst oveclock at all, shouldnt it return to stable frequencies after testing and especially after a reboot?

 

[way2fast91]

Originally posted by: kmmatney
Funny, my HD4830 is not stable at all past 700 on the core, when using Furmark. However my memory gets up to 1065 using the CCC Auto-tune. Lowering my memory to 1000 doesn't help the core get any higher. I'm going to edit the BIOS to apply more voltage to see if that helps my core go higher. I know that my card's inability to go higher than 700 is not due to heat - the card never goes above 55C, even when it crashes when set to 710 on the core. My memory speed is great, but I'd rather have more core speed.

kmmatney,
are you turning the memory back to stock before you try pushing the core? If not, try that.

CCC autotune adjusted my card to 690/1190!!! Which of course would artifact like theres no tomorrow as soon as I started L4D.

I think I will just be happy with 720/950 from this card and upgrade when the need arises.

 

[evolucion8]

Originally posted by: videogames101
The funny thing is, people still claim ATI cards don't OC well

Well, my HD 4870 isn't stable beyond 780MHz with the ATi's Space Screen Saver and Furmark. My X800XT couldn't overclock beyond 525MHz from the 500MHz stock (It was flashed to PE later and still wasnt stable, so it was a 20MHz overclock), my 9700 couldn't overclock beyond 330MHz (It was flashed to PRO so it was 50MHz overclocked) My X1950XT came preoverclocked to 650MHz and I oced it to 675MHz, and my HD 3850 overclocked from 735MHz factory oced to 800MHz (A card that it's reference comes at 668MHz default), freaking awesome that HD 3850 was. But nVidia cards aren't that overclocker friendly, the GeForce FX wasn't a good overclocker, the 6800 was horrible and were easy to kill, the 7900 was barely good and it wouldn't last, all these cards are the counter parts of the ones that I mentioned above, didn't mention the 8 series because they're good overclockers, the GTX series is good but isn't that great, I though that the 55nm may help them a little but it's an accomplishment for such large die.

*Edit: My girlfriend's X1950GT overclocks nicely from 500Mhz to 580Mhz with no issues.

 

[BlueWeasel]

My Sapphire 4830 (early version with the Qimonda RAM I think) can hit 760/1000 after volt-modding it using RBE.

It's got the Accelero on and I've been very pleased with it. The RAM OC sucks, but still happy with it.

 

[kmmatney]

Originally posted by: way2fast91

Originally posted by: kmmatney
Funny, my HD4830 is not stable at all past 700 on the core, when using Furmark. However my memory gets up to 1065 using the CCC Auto-tune. Lowering my memory to 1000 doesn't help the core get any higher. I'm going to edit the BIOS to apply more voltage to see if that helps my core go higher. I know that my card's inability to go higher than 700 is not due to heat - the card never goes above 55C, even when it crashes when set to 710 on the core. My memory speed is great, but I'd rather have more core speed.

kmmatney,
are you turning the memory back to stock before you try pushing the core? If not, try that.

CCC autotune adjusted my card to 690/1190!!! Which of course would artifact like theres no tomorrow as soon as I started L4D.

I think I will just be happy with 720/950 from this card and upgrade when the need arises.

I haven't tried putting my memory back to stock yet and just overclocking the core. I guess I'll have to manually overclock for that. I can go above 700 hz on the core if I use the ATI Tools artifact tester. However it will lock up after about 50 seconds of Furmark when raising the core, with the memory at 1050 Mhz. I'll try the core with the mmeory at stock with ATI tool and see what happens.

 

[kmmatney]

Originally posted by: BlueWeasel
My Sapphire 4830 (early version with the Qimonda RAM I think) can hit 760/1000 after volt-modding it using RBE.

It's got the Accelero on and I've been very pleased with it. The RAM OC sucks, but still happy with it.

What voltages did you use with RBE? Did you go as high as possible, or just stepped it up alittle? My stock voltage is 1.044, but I can choose three higher voltages: 1.082V, 1.12V and 1.158V. I'm thinking about undervolting the card in 2D, I did that for my 2900Pro and the card was completely silent in 2D.


Edit: I changed the voltage to 1.12V (up from 1.004V) using RBE, and the card can now hit 750 Mhz on the core. However, the temps are a bit hgiher. At default voltage, the temps never went above 55C. With the higher voltage they nopw go to 72C, and the fan gets to 50-55%. It's not too loud, but I have a very quiet computer, so it dominates the noise. I'm going to back the voltage down one notch. There is a tangible improvement in the performance of the card going from 700 Mhz to 750 Mhz on the core, but hopefully I can get there with the temps a little lower.

 

[BlueWeasel]

Originally posted by: kmmatney

Originally posted by: BlueWeasel
My Sapphire 4830 (early version with the Qimonda RAM I think) can hit 760/1000 after volt-modding it using RBE.

It's got the Accelero on and I've been very pleased with it. The RAM OC sucks, but still happy with it.

What voltages did you use with RBE? Did you go as high as possible, or just stepped it up alittle? My stock voltage is 1.044, but I can choose three higher voltages: 1.082V, 1.12V and 1.158V. I'm thinking about undervolting the card in 2D, I did that for my 2900Pro and the card was completely silent in 2D.


Edit: I changed the voltage to 1.12V (up from 1.004V) using RBE, and the card can now hit 750 Mhz on the core. However, the temps are a bit hgiher. At default voltage, the temps never went above 55C. With the higher voltage they nopw go to 72C, and the fan gets to 50-55%. It's not too loud, but I have a very quiet computer, so it dominates the noise. I'm going to back the voltage down one notch. There is a tangible improvement in the performance of the card going from 700 Mhz to 750 Mhz on the core, but hopefully I can get there with the temps a little lower.

I maxed out the voltage to 1.15v but just on the 3D power modes. That way, powerplay still works and underclocks the card when not gaming. With the Accelero, I don't think my load temps go higher than 55-60C.

It's a shame that Sapphire only allows us to go up to 1.15v. Some of the other cards allow for much higher core voltage.

kmmatney: What OC is your memory stable. Also, has anyone seen any VRAM volt mods yet for the Sapphire cards?

 

[evolucion8]

The RBE editor uses the BIOS voltage table, it doesn't give you freedom to select any number that you want, my card has only the following values; 1.083, 1.143, 1.203, 1.263. I can choose any of those values in the clock settings, I wasn't able to downclock the RAM to 1.8GHz because it would flicker or it won't be stable when it was clocking to 3D speeds. But I selected the lower voltage value when the GPU was idle and my power consumption lowered quite a bit and runs cooler. It used to idle at 500MHz @ 1.263V, now it idles at 1.083.

 

[FragCat]

So, I am getting my sapphire hd 4830 tomorrow should I get the version with DVI, VGA and HDMI output or 4830 dual-dvi and S-Video or should I wait for hd 4770s

 

[kmmatney]

Originally posted by: BlueWeasel

Originally posted by: kmmatney

Originally posted by: BlueWeasel
My Sapphire 4830 (early version with the Qimonda RAM I think) can hit 760/1000 after volt-modding it using RBE.

It's got the Accelero on and I've been very pleased with it. The RAM OC sucks, but still happy with it.

What voltages did you use with RBE? Did you go as high as possible, or just stepped it up alittle? My stock voltage is 1.044, but I can choose three higher voltages: 1.082V, 1.12V and 1.158V. I'm thinking about undervolting the card in 2D, I did that for my 2900Pro and the card was completely silent in 2D.


Edit: I changed the voltage to 1.12V (up from 1.004V) using RBE, and the card can now hit 750 Mhz on the core. However, the temps are a bit hgiher. At default voltage, the temps never went above 55C. With the higher voltage they nopw go to 72C, and the fan gets to 50-55%. It's not too loud, but I have a very quiet computer, so it dominates the noise. I'm going to back the voltage down one notch. There is a tangible improvement in the performance of the card going from 700 Mhz to 750 Mhz on the core, but hopefully I can get there with the temps a little lower.

I maxed out the voltage to 1.15v but just on the 3D power modes. That way, powerplay still works and underclocks the card when not gaming. With the Accelero, I don't think my load temps go higher than 55-60C.

It's a shame that Sapphire only allows us to go up to 1.15v. Some of the other cards allow for much higher core voltage.

kmmatney: What OC is your memory stable. Also, has anyone seen any VRAM volt mods yet for the Sapphire cards?

I didn't play with the memory all that much, as I concentrated on the Core overclock. My memory "atuo-overclocked" to 1065, and that seems to be completely stable. In the end, I just kept the voltage at stock (to keep things cool and quiet) and just stuck with my 700 Mhz overclock speed. For me, this was the best combination of performance and quietness.

I've since replaced the card with a new HD4890. It performs well, but is LOUD! It is loud even at Idle, as the GDDR5 doesn't underclock in 2D, keeping the temps up. It idles at 60C, which is hotter than my HD4830 at full load! If I use ATI Tray tools, I can underclock the memory and cool things down, allowing the fan speed to be lowered. The lowered fan speed raises the temps back up to 60C at idle, but at least the cards now finally quiet. However it keeps forgetting the settings, so I have to reapply them with ATT all the time. RBE cannot edit the BIOS yet, so it's a real PITA for now...

 

[dman918]

Made a new thread re: my issue.