"HD7970 & HD7950 Results Thread - Torture Your Card, Post It Here!"

[aussie-revhead]

What causes that 1second stutter near the start of a Heaven run? I have seen it every time I have run Heaven and it kills the min fps figure.

[Manicdan]

Hdd?

[aussie-revhead]

Quite possibly, that's what it feels like too, I haven't tried it on an ssd either.

[pugheaven]

Well, this was a 6970 TriFire and hopefully te Quad I've just got on the cheap will increase it more. Nice to see the 7 series being battered here!

[OC Nub]

Quite possibly, that's what it feels like too, I haven't tried it on an ssd either.

I have been using an SSD, it still happens here also.

[mR Yellow]

Anyone here bought a 7950?

[jaredpace]

Anyone here bought a 7950?

Still waitin to see a 1.3v overclock myself. Although you'll need to flash with the 7970 ASUS OC bios for higher voltage control and better mem timings. Best i saw was SKYMTL's sapphire 7950 oc at like 1.18ghz but he did that with only +.1v increase.


Attachment 123975

OCUK forums did the flash
7950 @ 925MHz / 5500MHz = 1504 points
7950 on 7970 BIOS @ 925MHz / 5500MHz = 1545 points
7970 @ Stock (925/5500) = 1584 points


Attachment 123976



The reference 7950 with the 2x6pin and 1 less phase pcb might be the one u need to use that 7970 asus OC bios with. Based on the OC results from Cypress PRO versus XT where XT's did about 5-10% higher speeds than Pro's just from binning - 7950s might reach 1150-1250mhz, while 7970s will do around 1200-1350mhz.

Memory seems to clock the same from what i've seen.
From sweclockers:

[mR Yellow]

Well, i read a review (not sure where) were they flashed with a 7970 bios to see if u could unlock the card and card wouldn't boot.

[Lanek]

I have been using an SSD, it still happens here also.

Even with 2x SSD in raid0, its the same. But you can reduce it, just let the engine run 5-6 seconds, then press F9 for benchmark, if it still occurs, re launch the bench with F9.

A good thing will be if they was " cut " the bench in 3-4 parts... calculate the average for each parts, and just divide the total scores by the number of " parts " . Same do many bench.

[aussie-revhead]

Does that then influence the minimum fps recorded?

[Trox]

Looking foward to see a liquid 7950 results-

[Hampti]

do you know any special trick for hd7970 in 3dmark03 for a high nature score?

[skoreanime]

So if I don't want to do any voltage tweaking, I should just stick with MSI AB or Asus GPU Tweak?

[UrbanSmooth]

No table of results?

[mR Yellow]

Hey guys

I just got my 7950 a few days ago. Been taking it easy with the OC.
ATM i'm stable at GPU 1100mhz and mem 1500mhz. Unfortunately i've reached my max with MSI Tool.

I know i need to flash with a unlocked bios. Any recommendations? I have a Sapphire 7950.
Or would it be better to change the limits of my current bios?

Thx

[zoomee]

After having time to settle an an EK-FC7970 block + backplate added I am seriously NOT impressed with my Sapphire 7970.

Stock volts using ccc will do 1125/1525 no problem - HOWEVER I note a loud noise coming from the card when I overclock even the slightest - its more a electricity crackling noise than a cap whine! - Anyone else had this?

Overclocking wise using AB - I can get upto 1175@1.2v - and thats it - no higher Even with a waterblock it just refuses to go higher no matter the voltage.

[mR Yellow]

After having time to settle an an EK-FC7970 block + backplate added I am seriously NOT impressed with my Sapphire 7970.

Stock volts using ccc will do 1125/1525 no problem - HOWEVER I note a loud noise coming from the card when I overclock even the slightest - its more a electricity crackling noise than a cap whine! - Anyone else had this?

Overclocking wise using AB - I can get upto 1175@1.2v - and thats it - no higher Even with a waterblock it just refuses to go higher no matter the voltage.

Maybe u just have a bad card.

[Ourasi]

I have been using an SSD, it still happens here also.

Press F9 (starts benchmark) at sceene/level 2, and the dipp in FPS is minimal at the start, SSD helps ofcourse..

Single HD7970 1125/1575:

[zoomee]

Maybe u just have a bad card.

Agreed - heres a youtube clip of the sound - starts at 16seconds when 3dmark started the first test:



See I've had cap whine on previous cards (which is more consistent and high-pitched) - This sound however is more of a crackling sort of sound...... only does it when the card is overclocked (even only slightly using CCC) whilst under load.

[pinto]

Mine does the same noise since day one, not a problem for me. The sound increase with the voltage but you can't here it with the stock cooling noise, only notifiable wit water or ln².

[OC Nub]

Press F9 (starts benchmark) at sceene/level 2, and the dipp in FPS is minimal at the start, SSD helps ofcourse..

Single HD7970 1125/1575:

Thanks, Ill give this a try.

[mR Yellow]

Can we maybe change the thread title to include the 7950s?

Have you guys noticed performance drops when OCing to high? ie lower scores?

[hokiealumnus]

I changed it, but it just changes the title of the post. A mod/admin would have to change the actual visible title.

Also added links to TRIXX & Afterburner since they don't require a BIOS flash.

[mR Yellow]

I changed it, but it just changes the title of the post. A mod/admin would have to change the actual visible title.

Will you request an admin to fix it? Thx.

[hokiealumnus]

Most definitely.