MAX Temp for 4850??

[ajaidevsingh]

Since i had a single 4850 that was working i tried OC it as far as possible i recall that the core can go till 1000Mhz but Overdrive only took me till 700Mhz!!

Also i cant overclock ram above 1025-1050??

Is 110C ok for this gpu??

 

[Rhaze]

Evidently the first iteration of the 4850 series uses worthless TIM... or at least an improper amount.

If you correct that, and your results are anything like the others I've seen, you'll be well within safe temperature ranges.

 

[ajaidevsingh]

Can 3870's or 3870's coolers fit the 4850??

 

[Quiksilver]

Since when did overclocking video cards becoming a known fact? [That you can achieve xxx spec's]

Also 110C is probably way to hot, you may want to change out the TIM and re-mount the heatsink and see if it improves, if it doesn't you may manually want to adjust the fan speed.

Also sames this card is GDDR3, the card is probably already pushing the limit of that so it's not real surprise your getting stuck at those speeds.

As far as your core clock, fix the heat issue first, then you might be able to take it higher, but with all cases of overclocking YMMV.

You need to do your own research before actually attempting anything.

 

[BassBomb]

wtf 1000 mhz core?

And generally ram has trouble over 1000

110C seems like wayyy too much

 

[ajaidevsingh]

Quiksilver the prob. is that Ati Overdrive does not give me the option to overclock over 700Mhz...
BTW can you tell me any cheap TIM??



BassBomb RV770 is said to OC till 1000Mhz http://forums.vr-zone.com/showthread.php?t=244004 and i have ram on 1100 for 8800 GTX for my friend that works great but card is hot...!

 

[Quiksilver]

Originally posted by: ajaidevsingh
Quiksilver the prob. is that Ati Overdrive does not give me the option to overclock over 700Mhz...
BTW can you tell me any cheap TIM??

Arctic Silver 5
Arctic Silver Ceramic
Arctic Cooling MX-2
Tuniq TX-2
Innovation Cooling Diamond 7

BassBomb RV770 is said to OC till 1000Mhz http://forums.vr-zone.com/showthread.php?t=244004 and i have ram on 1100 for 8800 GTX for my friend that works great but card is hot...!

Did you even follow they link back URL on that page, as it take you the details about the 4870 not 4850.

 

[ajaidevsingh]

I was thinking that a Voltage mod would help me get a little high core speed but we will soon find that out... Since 4850's and 4870's core is the same and thus has the same potential!!!?!!

 

[Quiksilver]

Yes, you would have to do a volt-mod do get those sort of clocks, but sames how you haven't even done basic research on these cards and even bother to read your own information; I can picture you killing you cards in the near future.

 

[error8]

Originally posted by: Quiksilver
Yes, you would have to do a volt-mod do get those sort of clocks, but sames how you haven't even done basic research on these cards and even bother to read your own information; I can picture you killing you cards in the near future.

He already killed a card. Don't remember what it was ( 3870X2 I guess). He likes destroying hardware, so don't disturb him.

 

[Quiksilver]

Originally posted by: error8

Originally posted by: Quiksilver
Yes, you would have to do a volt-mod do get those sort of clocks, but sames how you haven't even done basic research on these cards and even bother to read your own information; I can picture you killing you cards in the near future.

He already killed a card. Don't remember what it was ( 3870X2 I guess). He likes destroying hardware, so don't disturb him.

Well that's news to me, this man should not be mucking around in his PC then...

 

[ajaidevsingh]

3870 x2 died because of a voltage leak...

Since 4850 looks similar in Voltage Mod as to the 3870 so this seems simple..
I did know that 100C-110C is high but as i was thinking Ati chips have higher thermal operation temp. than a nvidia chip!!

 

[thilanliyan]

I don't think these will clock that high without extremely cooling and/or volt mods. Don't try to take it to 1000MHz without improving the cooling. I took a 3870 to 890MHz with no volt mods and stock cooling but couldn't go higher without losing stability. Maybe the shaders will go higher since they are clocked separately to the core correct?

 

[BlueAcolyte]

110C means your card should be throttling itself... Fix that. Then maybe we can go to the absurd clock speeds, ok?

 

[Sylvanas]

Why are you doing a volt mod on stock cooling, that's moronic. Firstly, the core cannot go to 1000mhz out of the box, that's like 300 and something mhz, nothing can do that. Secondly, it's GDDR3 ram in which case it is most likely 1.0ns which means 1000mhz is a reasonable, sometimes more, sometimes less. I would suggest you understand what you are doing before destroying things.

 

[SlowSpyder]

The reference cooler for the 4850 looks like it is just barely enough for the stock clocks and not a whole lot more. I wouldn't push it very far if I were you. These cards look to be wildly popular already, plenty of information will be coming down the pipe I'm sure, as well as better coolers will be come available.

 

[Bitgod]

Yeah, my biggest concern with maybe going crossfire with these is just how hot 2 of these are going to make my case, at least with my fat 8800 GTX, some of it gets blown out the back.

 

[ajaidevsingh]

I will not voltage mod rite now... i am waiting for my 3870 water block to return "gave it to a friend now i am sad i did"

My other 4850 was a dud tough thats why my m/b could not see it..they said they will send me another one in about a day & then i will CF...!!