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[H] users 7970 Overclock Results thread

Has anyone had an issue where, after you cold boot, the video card fails to downclock when it isn't under load? I had this problem earlier and couldn't correct it without deleting and re-installing drivers. Sure enough, the next time I fire it up I'm back to the card staying at 1125/1575 even when staring at a blank desktop. For reference, I'm using AB Beta 12 for all of my settings.

Edit: Looks like my problem was Overdrive somehow being enabled even after I turned it off on my driver re-install. As soon as I disabled it and popped open AB it went back to normal. D'oh.
 
Results
1200 Mhz Core (didn't try more)
1600 Mhz Ram (didn't try more)
1.170 Volts (Default)

Type Card
Saphire HD 7970 3Gb reference

Overclock Tool
Sapphire TRIXX

Max Temperature
85C with fan on Auto.

Stability Test
3DMark11 Tests + 3DMark Demo loop running for 4 hours, 3DMark Vantage, Battlefield 3, Skyrim... all running without problems.

I think I got lucky twice on Silicon Lottery my Radeon with stock voltages can go 1200/1600 or more but I'm using at 1000/1500 and my I7 2600k is running 4.5ghz@1.28v already tested up to 5ghz and it works ok even with Air Cooler.
 
After a little more tweaking my Sapphire reference card is running at 1200 Core and 1700 memory with the voltage set a 1250 I set Overdrive to +20%. I am using Sapphire Trixx to overclock. Card is stable running BF3 for about 4 straight hours last night. I set up a custom fan profile and the card never went past 75C.
 
If you are overclocking to 1200mhz, a 30% OC wouldn't the card still throttle as the max in power tune is only +20%.
 
Drangueos said:
Results
1200 Mhz Core (didn't try more)
1600 Mhz Ram (didn't try more)
1.170 Volts (Default)

Type Card
Saphire HD 7970 3Gb reference

Overclock Tool
Sapphire TRIXX

Max Temperature
85C with fan on Auto.

Stability Test
3DMark11 Tests + 3DMark Demo loop running for 4 hours, 3DMark Vantage, Battlefield 3, Skyrim... all running without problems.

I think I got lucky twice on Silicon Lottery my Radeon with stock voltages can go 1200/1600 or more but I'm using at 1000/1500 and my I7 2600k is running 4.5ghz@1.28v already tested up to 5ghz and it works ok even with Air Cooler.
Click to expand...

Nice chips u got there. Flash your 7970 to the ASUS OC Test bios and use ASUS GPUtweak software. You can get 1400mv VID voltage state with this bios + software. 1.4v core voltage. That card would probably do 1350-1400mhz core on 100% fan speed. You can also overvolt memory and clock memory to like 2000mhz on that. (not saying that it will be stable - but those are your limitations.)

gput.jpg
 
jaredpace said:
Nice chips u got there. Flash your 7970 to the ASUS OC Test bios and use ASUS GPUtweak software. You can get 1400mv VID voltage state with this bios + software. 1.4v core voltage. That card would probably do 1350-1400mhz core on 100% fan speed. You can also overvolt memory and clock memory to like 2000mhz on that. (not saying that it will be stable - but those are your limitations.)
Click to expand...

Yeah I was thinking about that, I already downloaded the asus bios... but first I will test what max clocks I can get with stock voltages, thx for the advice. ;)
 
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Can anyone with a core clock higher than 1150 try running the AMD Leo demo?
 
TehQuick said:
Galvanic corrosion occurs when you put aluminum and copper parts together in one loop.
Click to expand...

ok, checked zalman instuction and one perticular part wont work:
" Do not place in dusty or humid conditions, under direct sunlight, ":mad:

what radiator setup should i go with the EK-FC7970 Acetal+EN Nickel
that i can place the radiators outside, in the rain and sun, and not suffer corrosion?
 
Galvanic corrosion is an electrochemical process in which one metal corrodes preferentially to another when both metals are in electrical contact and immersed in an electrolyte.

TT : having copper on block, alluminum on other end, connected by plastic pipe, these wont be connected by electrical connection, how will corrosion still occur?
 
fused said:
Can anyone with a core clock higher than 1150 try running the AMD Leo demo?
Click to expand...

i Can run leo @1160mhz until 81 degrees temperature.
try manually adjust your fan to keep temps under 79 degrees.... (or lower depending on your card overclocks )
 
oo7warhammer said:
Galvanic corrosion is an electrochemical process in which one metal corrodes preferentially to another when both metals are in electrical contact and immersed in an electrolyte.

TT : having copper on block, alluminum on other end, connected by plastic pipe, these wont be connected by electrical connection, how will corrosion still occur?
Click to expand...

ions still travel through water:p I.e. water is the electrolyte :cool:
 
TehQuick said:
ions still travel through water:p I.e. water is the electrolyte :cool:
Click to expand...

yep.. avoid aluminum in your loop at all costs. aluminum fins on the radiator are fine as long as the radiator pipes are cooper.
 
Galvonic corrosion = the aluminum electrons will actually migrate through the fluid medium and start to plate the copper component. Stick with 1 or the other.
 
did a bit more reading and between different metals,
if the temperature and humidity are higher the chemical V(voltage) between different metals needs to be smaller, corrosion occurs faster at higher temps

sounds like crappy zalman engineers know this, hence the instructions says not put in direct sun/high water environment.


What water pumps and pipes are good for long distance? I may use up to 10 meters to run hoses outside, should i go thin pipes or thick pipes?
For the matching metals to EK-FC7970 Acetal+EN Nickel, which pump and radiators would be suitable? Also can these handle the outdoor sun / rain?
 
fused said:
Can anyone with a core clock higher than 1150 try running the AMD Leo demo?
Click to expand...

1250/1600
85C with fan on auto (got around 52%)
66C with fan set to 80%
stock voltages

1300/1600
Frozen :p
stock voltages

Not bad my chip :)
 
Anyone have issues with these cards forcing 2D clocks during games?

Been doing this since yesterday, even on a clean boot. Kind of hard to overclock when it thinks it should be running at 500/150 core/mem. Also takes significantly longer at boot to get through "Detecting drives..." and the Windows loading screen but I doubt that's related.

I've been getting a few "display driver stopped responding" at 1125/1575 @ 1.175V but they're rare and rather random.
 
For those of you using OCCT to test, are you using the 4.1 beta? And what settings are you running with regards to the "shader complexity" option?
 
Shocked said:
Anyone have issues with these cards forcing 2D clocks during games?

Been doing this since yesterday, even on a clean boot. Kind of hard to overclock when it thinks it should be running at 500/150 core/mem. Also takes significantly longer at boot to get through "Detecting drives..." and the Windows loading screen but I doubt that's related.

I've been getting a few "display driver stopped responding" at 1125/1575 @ 1.175V but they're rare and rather random.
Click to expand...
Quite clear that your card is unstable at that overclock. Turn it down. Also seems like core is not stable at 1125. Might want to back down to 1050 to 1075. Many reviewers were able to push only that much on stock volts. Heck, even my card on stock volts wouldn't do 1125. Need to bump to 1.212 to get it stable at 1250/1675 clocks.
 
KickAssCop said:
Quite clear that your card is unstable at that overclock. Turn it down. Also seems like core is not stable at 1125. Might want to back down to 1050 to 1075. Many reviewers were able to push only that much on stock volts. Heck, even my card on stock volts wouldn't do 1125. Need to bump to 1.212 to get it stable at 1250/1675 clocks.
Click to expand...
Well, the first issue of running at 2D clocks happens at default everything.

The second was a bit surprising because I was running stable at 1150 for a few weeks playing all kinds of graphically intensive games (and in some very long play sessions) without problems, and then yesterday and the day before the display drivers stopped responding once in brief play sessions of each of... EVE Online and Unstoppable Gorg.

The first time it happened was right before I lowered the core down to 1125, actually. :(
 
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these are a blast to play with....

my HIS is hitting 1250 core on air, 1.225v and 50% fan... still tweaking... haven't even touched my memory yet. :)
 
Just popped her in and maxed sliders out 1125/1575 no volts, stock. She's getting flashed and pushed further tonight without volts, plenty more mods to come after the first few critcal days of 'making damn sure she won't need an RMA' testing. 1.3ghz+ is my target.

Reference model w/gigabyte stickers. ASIC 73.6% 1.125-1.126v
55-56 degrees with GPU-z render test 99%GPU usage @ 100% fan (goddang these things are loud when you're used to 20-30db)
edit: Leo stable@1440 res. First demo I've seen since Ruby on the X800XT all those years ago lol. Love them though.

Some notes:
Bad fan harmonics at 56%, very low frequency beating. Anyone else get this?



Overall very impressed. Seems smoother than 6970 in general. Worth the year and a half wait. /fanboymode
 
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I upgraded my radiator so my card is running about 20c cooler under load. It did heaven at 1225 / 1790 no problem 82fps 2060 score. might go higher core but haven't tried yet. I couldn't get over 1200 core before.

edit: tried 1250 - artifacts in heaven.
 
robble said:
I upgraded my radiator so my card is running about 20c cooler under load. It did heaven at 1225 / 1790 no problem 82fps 2060 score. might go higher core but haven't tried yet. I couldn't get over 1200 core before.

edit: tried 1250 - artifacts in heaven.
Click to expand...

tried increasing your voltage?
 
Looks like 1100~1200 is about the average max oc for most cards, or 1300 if you've got a good chip.

Anyone put theirs under water yet and see how far it'll go? Since the atomic versions are already going to be 1335 I can image 1400+ when put in a loop.
 
Agenesis said:
Anyone put theirs under water yet and see how far it'll go? Since the atomic versions are already going to be 1335 I can image 1400+ when put in a loop.
Click to expand...

did you read only two posts before yours? :confused:

w/c helps but doesn't guarantee much above 1200

robble said:
I upgraded my radiator so my card is running about 20c cooler under load. It did heaven at 1225 / 1790 no problem 82fps 2060 score. might go higher core but haven't tried yet. I couldn't get over 1200 core before.

edit: tried 1250 - artifacts in heaven.
Click to expand...
 
Im running 1300/1790@1.212 on water. Played Crysis last night for an hour, and max temp was 46*C (single loop with CPU). I'm apprehensive to push further, pretty content with OC. Now if I could find another one that do the same OC, I'll be in business. :)
 
robble said:
did you read only two posts before yours? :confused:

w/c helps but doesn't guarantee much above 1200
Click to expand...

Aw man thats disappointing, the guys on OCN running 1300 ON AIR so I was hoping WC will give these cards a huge headroom.
 
Agenesis said:
Aw man thats disappointing, the guys on OCN running 1300 ON AIR so I was hoping WC will give these cards a huge headroom.
Click to expand...
There's too much variation in the chips themselves, quality of the silicon, etc. for better cooling to guarantee more atm. Also, the air coolers are pretty beefy and temps are great on most parts, so water cooling doesn't do as much as usual to differentiate itself in performance.
 
Well if I use my custom fan profile that doesn't go much over 55%, my HIS seems to like:

1.175v, 1175 core/ 1725mhz memory

If I could stand louder fan speeds: 1.25v 1260 core/ 1825 memory. But for the lower decibels and less volts I prefer the oc above.
 
Mr. K6 said:
There's too much variation in the chips themselves, quality of the silicon, etc. for better cooling to guarantee more atm. Also, the air coolers are pretty beefy and temps are great on most parts, so water cooling doesn't do as much as usual to differentiate itself in performance.
Click to expand...

Maybe not performance but it's definitely worth watercooling for temps. When running 1250/1725@1.174v, temps were ~78*C, and now with my wb running 1300/1790@1.212v, max temps are ~46*C. That along makes it worth since I no longer have to hear that jet engine of a fan ;)
 
manofthem said:
Maybe not performance but it's definitely worth watercooling for temps. When running 1250/1725@1.174v, temps were ~78*C, and now with my wb running 1300/1790@1.212v, max temps are ~46*C. That along makes it worth since I no longer have to hear that jet engine of a fan ;)
Click to expand...

witha gtx360 radiator and 6 ap-14 fans I'm seeing max temp of 38 =) I was hitting 58 with a 240 rad with 2 fans.
 
robble said:
witha gtx360 radiator and 6 ap-14 fans I'm seeing max temp of 38 =) I was hitting 58 with a 240 rad with 2 fans.
Click to expand...

That is awesome:) What voltage are you running your card at for your clocks?

I may need a new radiator. I have an Swiftech 320 that I bought used, and I think it's time to buy a new one.
 
manofthem said:
Maybe not performance but it's definitely worth watercooling for temps. When running 1250/1725@1.174v, temps were ~78*C, and now with my wb running 1300/1790@1.212v, max temps are ~46*C. That along makes it worth since I no longer have to hear that jet engine of a fan ;)
Click to expand...
Oh without a doubt. This card begs to be watercooled.
 
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