Radeon HD 7950 Owner's Thread

[Belkov]

Got my 7950 today. Running at 1122mhz and 1500 memory at 1.1v. Don't really feel like seeing what the limit is as 1122 seems plenty fast. If Crysis needs more I'll probably push it and see what it can do.

Is 1122 @ 1.1v considered a good overclocker?

Compare to my card it is very good.

 

[psolord]

Great Valley score Belkov

I guess this score benifits from a higher memory clock?

This is my score @ 1225/1450 1.210v on core and 1.6v on memory

For some reason my chip runs really hot, I replaced the TIM and no difference - In the 90c's running this benchmark.

I will have jack up the memory and see if it makes a difference..?

I find it very strange that Belkov got such a better score with lower core clock. Is this benchmark really that bandwidth hungry?

Also, did you check your gpu usage at the end of the benchmark? Was it at 100% all the time?

 

[Belkov]

I couldn't achieve that kind of score before - this one is with the new 13.2 beta 6 driver. May be if he is not using beta 6 driver that can explains his lower score.

 

[blakez]

I'm in the same situation.
I've tried several programs, to no avail.
Tried both the stock bios and F43, but no VRM temps to be found.

It's a gigabyte WF3 as well, bought two weeks ago (January ed. perhaps?).

It seems that some cards really don't wanna show their VRM temps/voltage. I'm also one of the unlucky!
I've bought my card recently (less then 2 weeks ago) and it came stock with bios FX0 on both switches 1 and 2. To me it looks that this bios is the same as FZ1. At least my card ran from start at 1000/1250 at 1.25V in full load and idle 300/150 at 0.950V.
Also in no way I can change the voltage for overclocking. Tried all solutions I've found on the web but still no sucess.

How is this for you Daxwax and Eureka??

 

[Belkov]

It seems that some cards really don't wanna show their VRM temps/voltage. I'm also one of the unlucky!
I've bought my card recently (less then 2 weeks ago) and it came stock with bios FX0 on both switches 1 and 2. To me it looks that this bios is the same as FZ1. At least my card ran from start at 1000/1250 at 1.25V in full load and idle 300/150 at 0.950V.
Also in no way I can change the voltage for overclocking. Tried all solutions I've found on the web but still no sucess.

How is this for you Daxwax and Eureka??

Have someone of you try to monitor VRMs with aida64?
All GB GHz bioses are voltage locked. You can reflash to F43 bios version which is absolutely unlocked.

 

[Daxwax]

It seems that some cards really don't wanna show their VRM temps/voltage. I'm also one of the unlucky!
I've bought my card recently (less then 2 weeks ago) and it came stock with bios FX0 on both switches 1 and 2. To me it looks that this bios is the same as FZ1. At least my card ran from start at 1000/1250 at 1.25V in full load and idle 300/150 at 0.950V.
Also in no way I can change the voltage for overclocking. Tried all solutions I've found on the web but still no sucess.

How is this for you Daxwax and Eureka??

Yes, all the things you wrote match my findings.
Voltage wasn't unlocked with F43 either.
Haven't tried aida64 yet.

 

[Smartazz]

I got my Sapphire 7950 up to 1160/1440, but is my graphics 3dmark11 score of 10265 low?

 

[Belkov]

Yes, all the things you wrote match my findings.
Voltage wasn't unlocked with F43 either.
Haven't tried aida64 yet.

Well in this case you got bad luck, because very few GB 7950 WF3 are hardware voltage locked... Are you absolutely sure about the locked voltage with F43 bios?

 

[GrantMeThePower]

I think my post may have gotten missed because this is an active thread, so I'll give it another shot.

I'll be installing my Gigabyte 7950 tomorrow. How do I check which BIOS it has? How do I install the better BIOS for overclocking and is there a guide to how to over clock it? I need something for newbs.

Thank you!!

 

[Face2Face]

I find it very strange that Belkov got such a better score with lower core clock. Is this benchmark really that bandwidth hungry?

Also, did you check your gpu usage at the end of the benchmark? Was it at 100% all the time?

I have the newest beta drivers so that wasn't it. It may be because the card was running too hot and it's performance was affected? It's running way too hot for that overclock and voltage.

Time for a better cooler. I am looking at custom bracket options now, using my current H60.

http://triptcc.com/product/h6080100-personalized-lip-bracket/

I was thinking I could buy a H100i or H220 for my CPU like I have been wanting for a while now. Would be nice to hit 5Ghz without delidding... Still may not happen?

Or I can always go the Accelero Xtreme 7970 route.

 

[Belkov]

I checked and yes - valley scoring is very affected by the memory.

I think my post may have gotten missed because this is an active thread, so I'll give it another shot.

I'll be installing my Gigabyte 7950 tomorrow. How do I check which BIOS it has? How do I install the better BIOS for overclocking and is there a guide to how to over clock it? I need something for newbs.

Thank you!!

You can see the bios id with gpu-z and you can check in GB site wich is yours. Also you can download some of the GB tools for reflashing bios and there you can check yours. Don't bother to reflash if you have no issues with your current bios. For overclock you can go for google search. There are a lot of nice explanations and "manuals" how to do it.

 

[Face2Face]

Well it turns out I was running too much voltage to my card. Temps were getting too high, with this voltage the card just hit 80c.

I was able to achieve these numbers below. I can go higher on both, but i want some better cooling first.

1235/1800

1.156v core/ 1.65v Memory


Here is my revised score

 

[psolord]

Woohoo, now we're talking! :thumbsup:

I didn't Know that there were hardware voltage locked WF3s though! :S I'm picking up mine today or Monday. Jesus I am going to be very dissapointed if they are.

The shop clearly mentioned that they were 900Mhz models though and according to Rhezzus, these models should not be, right, right?

 

[MBrown]

What sort of overclock should I be expecting on stock voltages for my sapphire 7950? I can only seem to get 1030/1300.

 

[Belkov]

What sort of overclock should I be expecting on stock voltages for my sapphire 7950? I can only seem to get 1030/1300.

every chip is different - on stock i can achieve only 970Mhz for the core. So more or less your clock is normal - what is your voltage when the card is under load?

Face2Face, this is very good score - one of the best for 7950s. However it is bad that you got so high temps. What kind of fan profile did you use for this score - 100% ?

 

[Eureka]

The thing is, there's a lot of people claiming high overclocks are normal for the 7950 when, like any other card, it's up to the silicon lottery. You're not guaranteed a good overclock for any chip. Another thing to keep in mind is that, unless you get a good overclock, you're not going to post about it, usually.

Sorry, but there's a lot of 7950 hype on this board and it's something to keep in mind when purchasing a card.

 

[MBrown]

every chip is different - on stock i can achieve only 970Mhz for the core. So more or less your clock is normal - what is your voltage when the card is under load?

Face2Face, this is very good score - one of the best for 7950s. However it is bad that you got so high temps. What kind of fan profile did you use for this score - 100% ?

1.225v under load. I get 731 on Unigine Heaven 4.0 @ 1080p 8xAA, Ultra settings and extreme tessellation.

 

[Belkov]

1.225v under load. I get 731 on Unigine Heaven 4.0 @ 1080p 8xAA, Ultra settings and extreme tessellation.

This is to much voltage for stock - is the second bios of your VGA different? Why don't you try it? What is the stock clock for both of your bioses?

 

[MBrown]

I don't have a bios switch on mine... At least I didn't think I did. Also I haven't changed any voltages. I was using gpuz to read my voltages. How accurate is that? program

 

[Belkov]

Are you sure? Could you post link with the exact model?

 

[MBrown]

Are you sure? Could you post link with the exact model?

http://www.newegg.com/Product/Produc...82E16814202006

 

[Belkov]

You have second bios - look the switch round with red:

Turn it when your PC is off.

 

[Face2Face]

every chip is different - on stock i can achieve only 970Mhz for the core. So more or less your clock is normal - what is your voltage when the card is under load?

Face2Face, this is very good score - one of the best for 7950s. However it is bad that you got so high temps. What kind of fan profile did you use for this score - 100% ?

Yes, the fan speed was @ 100%. I pretty much hitting the limt with this cooler. The Twin Frozr III cooler is nowhere near as good as the Windforce cooler. My ASIC is 89.1%, pretty typical for MSI TF3 cards on the 7970 PCB. I still have a lot of voltage to play with on this card. I just need some better cooling. My goal is too run 1200 core while playing games with decent temps. The Arctic 7970 cooler should be able to do that, with good VRM temps as well.

 

[MBrown]

You have second bios - look the switch round with red:

Turn it when your PC is off.

I switched it to the second bios. GPU-Z says its the same version, but strangely my overclocks stayed the same. Shouldn't they have gone down?

Edit: Under load it maxed at 1.238 volts this time, but most of the time it stays around 1.08 or thereabouts. The same was the case with the previous bios as well.

 

[Belkov]

Is the stock core clock lower? See what is the stock voltage under load for this bios. Also what is the asics quality shown in GPU-Z?