[H] users 7950 Overclock Results

So the trick with the switch is to have it on the number 2? I'll double check mine. That would be sick to push even farther.
 
Nice over clocking and benchmarks. I might buy one of these when the price comes down to a reasonable level.
 
I bought an ASUS 7950 DC2 TOP card in hope of great overclock and low noise. I managed to increase vgpu to 1100mV, with that i can do 1050/1575. Anything above 1100mV creates a bug in the card, it generates lot more heat and it freezes the whole computer... I have a 600 watt cooler master psu with single 12v rail 540w max. Im gettin the sapphire oc tomorrow, will post results!
 
Zozzhun said:
I bought an ASUS 7950 DC2 TOP card in hope of great overclock and low noise. I managed to increase vgpu to 1100mV, with that i can do 1050/1575. Anything above 1100mV creates a bug in the card, it generates lot more heat and it freezes the whole computer... I have a 600 watt cooler master psu with single 12v rail 540w max. Im gettin the sapphire oc tomorrow, will post results!
Click to expand...

Getting 1200/1600 out of my Sapphire 7950 OC. Hope you can get there also! Oh and too lazy to do the .dll thing to go higher at least on the memory.

:)
 
I wanted to bench crysis 2, freezed in 1 min, only restart helped. I looped 3dmark11 all night at 1075mv 1025/1575. Im at university now but taking back the card afterwards :)
 
Got my sapphire 7950 oc! 1200/1575 1.2vgpu. My son stability testing it with batman arkham city. I completed 3 run crysis 2 bench too. I'll continue later :)

Max gpu temp 73
Max fan 72%

its not even loud! Im comparing to a dc2 fan, and that was louder!
 
My son's stability test completed with success, no freeze or lockup, i did 1 hour 3dmark11 loop, then 2-3 hour 3dmark 11 graphic test 2 loop, last test maxed the temp 79 degrees, but nothing serious :)
 
Good deal! Pretty awesome overclocks. These sapphire cards are the best 7950's out right now by far.
 
Yeah, but i managed to freeze the pc with this card too...

1200mV 1200/1800 crysis 2 was cool, but fps wasnt rising from 1575 memory. I raised to 1250mV and aimed for 1250/1800. Freeze came back, like it did with ASUS DC2 TOP. I rebooted then tried 1250mV 1200/1575, CCC restarted, ok... 1237mV 1200/1575, ok nice, 1250/1575, nice, 1270/1575 freeze again. I wonder what could a wateroverclocker do with this card? It has plenty of room with overclock but locks up not throttling?! Max system watt usage was: 369W, measured with socket hardware.
 
did some OC'ing past two days

1160 core 1600 mem @ 1.181v

get artifacts in heaven any higher than 1160 core even at 1.2v. but runs stable in actual games so i'm happy. will mess with voltage some more later to see if i can overcome artifacting past 1160.
 
andrewbub said:
did some OC'ing past two days

1160 core 1600 mem @ 1.181v

get artifacts in heaven any higher than 1160 core even at 1.2v. but runs stable in actual games so i'm happy. will mess with voltage some more later to see if i can overcome artifacting past 1160.
Click to expand...

time to go wc andy
 
Hello all,

I recently acquired a brand new HIS 7950 (yes not the best brand) and have been attempting to OC it.
Unfortunately, I can't go past 950 core without it crashing after ~30 mins of gameplay. I'm playing non-demanding games like CounterStrike Global Offensive, Starcraft 2 and Heroes of Newerth.

I never get artifacting, but as I said before the display driver likes to crash. It's not a temperature issue (~70 C max, sometimes crashes at 50). I'm wondering if I just have the worst 7950 on record or if maybe I should try different drivers?

I'm using Afterburner to OC, if it matters. Also, bumping voltage doesnt help even at 1.2v I still crash if I go past 950Mhz.

Any help or ideas would be appreciated :)
 
Spent the last 2 hrs trial and error with my Gigabyte Windforce 7950.


Core - 1150
Mem - 1650
mV - 1.175


Running at 72% Fan and at max load hitting 80c


I think I can hit 1200 but I dont want my card running over 80c at 1.2v


3DMark - 8779 with my sig rig. I think I'm going to bench my cards with Crysis 2, BF3, BF3 MP, Skyrim and if I can, Metro with stock vs OC. It'll give me something to do.
 
Their good up too 100c honestly. Just don't go over that. I put mine a 1.28 for a couple bench runs to get to 1200/1600. I think xfire needs more voltage. Your card should be fine at higher volts if your just wanting to bench.
 
Anyone doing h2o? @ $379 this is starting to look more attractive!
 
You all are running some nice clocks.

My Asus 7950 DC II would only do 1025MHz from the CCC with stock voltage. I flashed an XFX 7970 DD bios into it, now it does 1100MHz from the CCC. I can run 1150MHz with Trixx and I stick with 1100|1575. It's much more quiet like that. Voltage is now reported as 1174.

For one reason or another the Asus 7970 DC II bios wouldn't flash into my card successfully.

Now I just use Trixx to drop the fan to 10% when I'm not gaming.

BTW, for those interested, techPowerUp! has a nice bios database with almost all 7950s and 7970s.

http://www.techpowerup.com/vgabios/
 
Last edited:
heatthegreat
Nice clocks at decent temps. As you say pushing it any further might not be worth it. Try and improve ur case cooling and keep temps around 70 - 75c . its in the best interests for long term usage.
 
Blacklash said:
You all are running some nice clocks.

My Asus 7950 DC II would only do 1025MHz from the CCC with stock voltage. I flashed an XFX 7970 DD bios into it, now it does 1100MHz from the CCC. I can run 1150MHz with Trixx and I stick with 1100|1575. It's much more quiet like that. Voltage is now reported as 1174.

For one reason or another the Asus 7970 DC II bios wouldn't flash into my card successfully.

Now I just use Trixx to drop the fan to 10% when I'm not gaming.

BTW, for those interested, techPowerUp! has a nice bios database with almost all 7950s and 7970s.

http://www.techpowerup.com/vgabios/
Click to expand...

Do all 7950s have two bioses? That's neat that you got results.
 
2wiced said:
Do all 7950s have two bioses? That's neat that you got results.
Click to expand...

From what I undstand yes. Some are two of the same bios and others are like my sapphires, one has an overclock and the other is stock. Pertty good idea.
 
Did anybody have any luck unlocking the additional cores to 7970 standards (similar to how you could unlock cores on a 6950->6970)

I thought about getting the gigabyte 7950. I loved the cooling on the gigabyte OC 6950 card. I could crank it all the way up in afterburner and it was still rock stable and cool @67C after running unigen for 1 hour.
 
^^ Someone can correct me if I'm wrong and I don't think it's possible.

All I got was higher default voltage.

Looping the heaven bench I hit 68C in a closed case with all system fans set on low. The graphics card fans hit 31% set @ auto after it had been going greater than 1 half hour. That's 1100|1575 with 1175 voltage. I ran it @ 1920x1200 default settings. I could probably get better temps if I didn't keep my case fans set so low.

I can bench 1150MHz fine and I don't game at that speed.
 
Last edited:
Those temps were with the side panel removed... I have a haf 932 so when I put the side panel on, there will be a extra big fan on there. I only game at my 1150/1650 profile with games like bf3, crysis 2, just games that require the extra horsepower. Other than that, I leave my card at stock for browsing and what not
 
Gigabyte Windforce 1175 clock, 1600 mem, 1.218 voltage, idles around 55^C, ~70^C in BF3, 50% fan speed.
 
Small Update :

After looking at Bordak's clocks, I decided to drop my fan to 50% ( alot quieter ) and kept the same clocks and also put my side panel on my case which added an extra big fan. I idle at around 50c and in BF3 MP with 64 players, I get to around 67c with 1150/1650. I'm thinking I can hit 1200/1700 with a small volt bump from 1.175, but is the extra 50hz worth it ? Am I going to notice a difference?

Also, in GPU-z, it shows my core clock running at 800 and mem at 1650 when I'm not playing a game, but when I boot up any game, it goes back to 1150. Is that a new feature? Downclocks when not being used? In-game, using MSI OSD, it shows the proper clocks of 1150/1650, but out of game, it shows 800/1650.
 
heatthegreat said:
Also, in GPU-z, it shows my core clock running at 800 and mem at 1650 when I'm not playing a game, but when I boot up any game, it goes back to 1150. Is that a new feature? Downclocks when not being used? In-game, using MSI OSD, it shows the proper clocks of 1150/1650, but out of game, it shows 800/1650.
Click to expand...

This is normal, mine drops the clocks when not under load as well.
 
It sucks though, because I have MSI Afterburner up with my 1150/1650 yet in BF3, it's clocked at 400/1250, its not upclocking itself like it's supposed to...
 
Guys, I'm confused about my card. I appear to be getting very good clocks out of a Sapphire I just picked up on the forum. Sapphire 11196-00-40G with an Accelero Xtreme 7970.

RAM I am currently running at 1800MHz (yes, that's right). Artifacts just start occasionally showing up at around 1930MHz in ATI Tool, 1920MHz in Serious Sam 3, and 1910MHz in Furmark.

On the core, I just barely start to get artifacts at:
1.25Ghz 1.25V
1.20GHz 1.20V
1.15GHz 1.15V
1.10GHZ 1.11V
1.05GHz 1.08V
1.00GHz 1.03V

At all of the above, dropping the core by 10MHz makes it where I can't see a single artifact. Is there anything else I should run to verify stability? I usually run it at max I can, and back off a few MHz, such as 50Mhz for the core and 100Mhz for the RAM. I'm also not sure if 1.2Ghz/1.25V is good to run at for the next few years, even with the core maxing out at 61C (btw, the cooler is awesome). I can't find any discussion about voltages for these things. Opinions? Yes, it won't be running at that voltage 24/7, so it really SHOULDN'T matter.

So what's up with my RAM doing so well, not that I'm complaining? :\

Edit:
I guess the RAM is fairly normal according to other forums. I'm very surprised - 50% overclock on the entire card. Should I just leave the powertune thing at +20%? I tried reading about it today, but didn't see a downfall to increasing it, or even a reason to move from '0' in normal gaming loads.
 
Last edited:
Powertune just tells the card it can have more power and probably should be left at +20% with those clocks.

Honestly I would back the memory oc off a little bit and run a higher core oc. Backing the mem off should help stabilize a higher core oc. Your going to see better performance gain when the core is increased. Those sapphire cards are pure overclocking beast. Some of the best out there.
 
SGSeeker said:
Guys, I'm confused about my card. I appear to be getting very good clocks out of a Sapphire I just picked up on the forum. Sapphire 11196-00-40G with an Accelero Xtreme 7970.

RAM I am currently running at 1800MHz (yes, that's right). Artifacts just start occasionally showing up at around 1930MHz in ATI Tool, 1920MHz in Serious Sam 3, and 1910MHz in Furmark.

On the core, I just barely start to get artifacts at:
1.25Ghz 1.25V
1.20GHz 1.20V
1.15GHz 1.15V
1.10GHZ 1.11V
1.05GHz 1.08V
1.00GHz 1.03V

At all of the above, dropping the core by 10MHz makes it where I can't see a single artifact. Is there anything else I should run to verify stability? I usually run it at max I can, and back off a few MHz, such as 50Mhz for the core and 100Mhz for the RAM. I'm also not sure if 1.2Ghz/1.25V is good to run at for the next few years, even with the core maxing out at 61C (btw, the cooler is awesome). I can't find any discussion about voltages for these things. Opinions? Yes, it won't be running at that voltage 24/7, so it really SHOULDN'T matter.

So what's up with my RAM doing so well, not that I'm complaining? :\

Edit:
I guess the RAM is fairly normal according to other forums. I'm very surprised - 50% overclock on the entire card. Should I just leave the powertune thing at +20%? I tried reading about it today, but didn't see a downfall to increasing it, or even a reason to move from '0' in normal gaming loads.
Click to expand...


Even though you can run at ridiculous OC's on the memory doesn't mean that the memory is really able to run at those speeds. There is a point at which it will start kicking out errors and the card will benchmark slower because of this. So try this.

Set the card to stock. Find your highest OC for the core.

Set the core to something close to max OC and memory to stock.

Benchmark the card to see what your score is.

Increase the speed of the memory in incremental steps and benchmark it each time to find the point at which the memory will start thrashing and your score starts to go down instead of up.

Rollback the memory speed just a little bit. This is what you should have your memory set to.

Enjoy your new card!

If I typed something wrong I apologize. Sleepy. :)
 
Hi guys i'm trying to do some OC to my Gigabyte Windforce 3X 7950. I achieved maxing out the Core with Msi Afterburner. I'm at 1100mhz core but didn't touch the memory yet. You know.. there is something weird.. when i pass Unigine Heaven maxed out and 3dmark11 the card at 1100mhz core ( 1.2V) is fine, it doesn't crash, but when i play Crysis or almost any game, it crashes .__.. Aren't the benchmarks supposed to be more GPU demanding ? What should I do ? Temps are fine, even with these OC my temps are always below 60° with fan at 48%.
Oh and BTW, should i set the "Power Limit" slider at +20% ? Right now it is at stock "0%".
Last thing..., hmm CCC and Afterburner won't let me set a core frequency higher than 1100mhz , how can you guys Oc more than 1100mhz core ?

Thanks for your help!
 
Try running OCCT GPU:3D test, its demanding and can scan for errors. MSI Afterburner will allow you to go past CCC

Im trying to OC my XFX 7950, thanks to the gem cageymaru posted in #74 :) i shall try that method
 
cageymaru said:
Even though you can run at ridiculous OC's on the memory doesn't mean that the memory is really able to run at those speeds. There is a point at which it will start kicking out errors and the card will benchmark slower because of this. So try this.

Set the card to stock. Find your highest OC for the core.

Set the core to something close to max OC and memory to stock.

Benchmark the card to see what your score is.

Increase the speed of the memory in incremental steps and benchmark it each time to find the point at which the memory will start thrashing and your score starts to go down instead of up.

Rollback the memory speed just a little bit. This is what you should have your memory set to.

Enjoy your new card!

If I typed something wrong I apologize. Sleepy. :)
Click to expand...
Which benchmark would you recommend?
 
To those who OC, mine seems to only reach 77c on BF3, when i run Furmark its a lot higher, should i disregard furmark and go higher since it doesnt cause much trouble while gaming?
 
BlackThought said:
To those who OC, mine seems to only reach 77c on BF3, when i run Furmark its a lot higher, should i disregard furmark and go higher since it doesnt cause much trouble while gaming?
Click to expand...

Personally, I would not care about Furmark temps. Furmark is useful for testing OC stability/artifacting, but it is not representative of a gaming load. I would play BF3 with vsync off (to load the card more heavily) for 2-3 hours on 64 player maps with max detail and if temps are ok, call it stable.
 
You must log in or register to reply here.
Back
Top