AMD Radeon 7950 / 7970 Overclocking club

yasamoka · 2013-04-01T09:31:48+00:00

Post here your system spec, HD7950 / HD7970 overclocks, voltages, temperatures, if you have replaced the stock cooler, any further suggestions for OCing. Ben...

yasamoka

Zahix wroteWell my vapor-x 7950's got to 1100/1500 at stock clocks no sweat and they are really silent and cool. I highly recommend . Make sure they are the double 8pin power too.

Are those 7950s voltage locked? If so, were you able to bypass the voltage lock with a BIOS flash?

Zahix

I'm currently at 1125 mV(stock) and can reach 1300mV.

yasamoka

Zahix wroteI'm currently at 1125 mV(stock) and can reach 1300mV.

Ummm WHAT? Since when were they voltage-unlocked?

Zahix

Since the new revision with 2x8pin maybe ? why would they give you oc stability and lock the voltage ?:p

yasamoka

Hahaha well that WAS what used to happen back when I was reading about the Vapor-X 7950s. I thought you knew? :P

Zahix

This is the model of my cards.

yasamoka

Noted, thanks!

edhunter

Hello all,
I got a new A Sapphire 7950 vapor-x...I want to know what's your experience is with its performance.

OC'd at 1000mhz core 1250mhz memory, I am getting the below results on 3Dmark advanced edition, is this normal, I kind of feel like MSI TwFZR 7950 was faster at 950.

yasamoka

I don't have 3DMark Advanced Edition. Can you bench using Unigine Heaven, Unigine Valley, etc...?

btw you got the Sapphire 7950 Vapor-X from Amazon or pcandparts?

edhunter

The latter. Why any difference?

yasamoka

Awesome. Their price is very very good.

Now the benchmarks.

Zahix

edhunter wroteHello all,
I got a new A Sapphire 7950 vapor-x...I want to know what's your experience is with its performance.

OC'd at 1000mhz core 1250mhz memory, I am getting the below results on 3Dmark advanced edition, is this normal, I kind of feel like MSI TwFZR 7950 was faster at 950.

http://i.imgur.com/BIOTcBY.png?1

First, Congrats on the new card ! it's a beast ! I haven't benched on 3dmark11 so far. But I have done a couple of Heaven 4.0 benches at 1025/1375 with my CF 7950's @ max settings.
ps: my os is on a lousy sata 1 hdd at the moment(ssd died). So I think numbers can be better.

yasamoka

Numbers won't change with an SSD.

And yes, that's right on the ball. I get 81FPS on CrossFire 7970s @ 1125MHz.

Used to get 35FPS on single stock 7970 @925/1375, slightly higher than your 7950 @ 1025/1375, which is logical.

EDIT: btw, Zahix, I have found that even under 60FPS, VSync removes most microstutter if not all. Now there is only hitching which I guess is Heaven's doing since it's sporadic and might be due to FPS fluctuations themselves.

Try it yourself; enable RadeonPro's OSD and toggle VSync on and off using Shift + Home!

edhunter

Here are the results: at 950/1250

at: 1100/1500

yasamoka

Looks good.

Why is your resolution 1920x1064 btw?

edhunter

No Idea, I guess instead of 1080 i chose 1064.

yasamoka

Are you using HDMI? An HDTV? If so, make sure that in scaling options in CCC, the scaling is set correctly so that the whole screen area is filled and you get 1080p.

edhunter

No not yet. I want to be able to stream to my TV in a different room

chassis

i just ordered a 7950 vapor x boost OC from pcandparts also.....anyone know if my psu can power , its a thermaltake litepower 600w..
also im looking to overclock it to about 1100/1375.....do you think it would go that far..

yasamoka

No way!! Just...don't even try!

Buy a new power supply! Check out CompuWorld for the XFX Pro 750W. $120 + VAT.

EDIT: Also, what are your current system specs?

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