Nvidia 9800Gx2 Club!

[aussie-revhead]

you and me too bro
takes 1.48 to 4.45 but over that it takes alot more.
as for my card,my clock at like 45c load cant get the 229 G.T has in gt3
have it up to 799/2000/1135 too with no arty's at all,if warmer it will arty at 777c 1940shader

card cover is off and i have 1/2 pound of dice on each side of card intake area fan at 100%

How many can clock this high ? I have benched to 760/1650/1150 but mem is just starting to artifact there , have not maxed gpu and shader yet.

[slugzkea]

As i stated before, I doubt that clock is stable at all. The highest I was ever able to bench at was 760/1890/1080 but that wasn't stable at all.

I'm currently trying out 750/1780/1080.

If you clock too high, the card actually drops in performance. Editing the bios to add more volts would help. I'm going to attempt that probably next month

[koc]

I try to find the max stable OC

and im at 750/1875/1050 , very stable in all games

[wilson]

Ok a noob question now but do you leave ..
Multi-GPU performance mode on "NVIDIA recommended (Multi-GPU)"
or do you use AF1 or AF2 ?

[slugzkea]

Never tried the other options, i doubt it'll perform better than 2 cores though (Internal SLI)

[aussie-revhead]

Im up to 19447 in 3D06 XP but Im stuck at 3.6Ghz for now , thats at 750/1750/1100 . Im surprised how little clocking the card up helps my scores , is this thing still cpu bottlenecked ?

CPU clocks make a large difference in my scores.

[wilson]

I know ive asked b4 but what temps are you getting on both cores, memory and vrm.
Im getting some artifacts but don`t know if its heat or driver related.
On average @ load GPU 1 -72 GPU 2 -68 Memory 68 VRM 56
idle 50 45 45 40
But i can hit 70-75 on the memory and vrm when gaming for 2 hours or so or when im on a large/full mp map on cod4.

[slugzkea]

cores go up to 70's C.
GPU VRM's i'm sure everest is reading them wrong because GPU1 VRM goes up to like 60'esh and VRM2 goes up to 90'esh, which i doubt is a correct reading.

Mem hits 60'esh.

What clocks are you using that's getting you artifacting? force fan to 80%.

EDIT- nvm i'm assuming the clocks you're using are the one in your sig.

try forcing fan to 80%. COD4 is the same as the COD2 engine, and the COD2 engine was very very sensitive to artifacting.

You could get no artifacts in any of your games but COD2, will artifact on any OC hardware, so it could be that.

Try playing other games that are just as sensitive to artifacting such as NFS carbon, see if you still notice artifacting.

or better yet, download ATITool and scan for artifacts.

[slugzkea]

Im up to 19447 in 3D06 XP but Im stuck at 3.6Ghz for now , thats at 750/1750/1100 . Im surprised how little clocking the card up helps my scores , is this thing still cpu bottlenecked ?

CPU clocks make a large difference in my scores.

Unless you get your Q6600 past 3.7ghz, it will severely bottleneck the GX2.

As i've stated before, most tests are single threaded, or dual threaded.

the Q6600 is nothing but 4 e6600's THUS:

most tests will run on your CPU and reconize it as a e6600 clocked to 3.5-3.6 or whatever GHZ you're clocked at.

Thus, Q6600 = primitive, and will bottleneck the GX2.

[swiftex]

I try to find the max stable OC

and im at 750/1875/1050 , very stable in all games

hows the bare card working, i would think its a great improvement 0 any tricks to removing cover?

[swiftex]

Unless you get your Q6600 past 3.7ghz, it will severely bottleneck the GX2.

As i've stated before, most tests are single threaded, or dual threaded.

the Q6600 is nothing but 4 e6600's THUS:

most tests will run on your CPU and reconize it as a e6600 clocked to 3.5-3.6 or whatever GHZ you're clocked at.

Thus, Q6600 = primitive, and will bottleneck the GX2.

i want a 9450 but still not available here - i think that should be improvement versus q6600 go @ 3.52ghz

[slugzkea]

i heard there's like 150+ screws to remove the cooler, so screw that!

one thing i hate about this card is that the air intake is from the BACK, and it blows the air out INTO the case.

The 45nm quads are much better than the 65nm however, the multi's are only 8x.

[giorgos th.]

the intake is from the fan M8..
the exaust is from the back of the card..

[RLM]

Been through all sorts of changes with this card.

First I removed the cover. I'm pretty cack handed, so I have to say really it's not that difficult.

Then I took the cards apart, cleaned up the cores and applied mx-2. I had to re-mount the second card once as temps weren't level initially.

I then tested it again, without putting the cover back on and seeing the difference, decided to leave it off. I'd say leaving the cover off really did help with temps.

Then I decided to do the volt mods, and upped vgpu cores to 1.2v.

Even just with air cooling, the bare cards held up pretty well. With the case open and aircon on I managed to do a 756/1944/1150 run in 3d mark 06. Previously I was limited to 730/1860/1150 or thereabouts.

However there was artifacting and i couldn't complete a 3dmark 03 with the shader clock this high. What I would say though is that I could now play GRAW2 with a reasonable overclock.

Now I've installed my watercooling. I did a few more tests. Case on, radiator fans on low. I managed to do 790/1998/1150 3d Mark 06 and 03. That's with warm ambients and no artifacts.

So in conclusion the temps make a big difference, and a little voltage helps.

RLM

[RLM]

If you clock too high, the card actually drops in performance. Editing the bios to add more volts would help. I'm going to attempt that probably next month

I wouldn't bother. I tried it and it made no difference. Readings taken with a multimeter.

RLM

[RLM]

Deleted....

[wilson]

how much better is it with the case off ?? I did repaste mine with mx-2 but found that it needed alot on the ram to make good contact everything else was ok. Also what is the other chip type thing on the 2nd card as that has its own heatsink aswell.?

[RLM]

how much better is it with the case off ??

Well referring to my initial post.

Initially chuffed, but not so now. Fan set directly to 85% in Rivatuner. Sides off case and aircon on. Ambient still a bit warm. OC at 675/1676/1050

Tried playing Graw2 1900x1200 and it crashes out "nvspdll" or similar. Used to get the same error on my 8800 gtx in the early days, before I found upping fan speed sorted it.

Checked rivatuner monitor and it crashed out at 92 degrees. The bottom of the card is roisting. Idle is 55 sides off case and 60+ on.

With case off and mx-2 (I left the thermal stuff on the memory initially) it kept me in the 70s, maybe upper 70s whilst playing graw. With aircon on and fan blowing in the case I got idle temps down to 43-45c. That's with 1.2v going to the cores instead of the default 1.15v. Note you have to take into account it's 30-35c all year round here.

Certainly worth it in my opinion.

As for 'Also what is the other chip type thing on the 2nd card as that has its own heatsink aswell.?', haven't a clue mate. I can tell you cheese is a type of meat though.

RLM

[RLM]

Need to squeeze some more out of the q6600 and memory. Certainly a bottleneck in the equation. 22k+ would be nice.



RLM

[wilson]

Q6600 @ 4Ghz lol thats very nice and you have the same wc kit as me. Have you got the swiftech gt water block or have you got something else?? Also what temps have you got on the cores as im thinking about putting a 2nd rad in so i can run my fans at a lower speed and get better cooling

[RLM]

Yes I like the swiftech kit. Had to have it brought out from the UK at the time, it was all thermaltake here.

A few changes though over time. EK Supreme Block(CPU) -> EK 9800 Gx2 Full Cover -> Res -> Pump -> PA 120.3 Rad -> MCR 220 Rad. One loop.

Temps depend greatly on aircon and fan speed, but more than sufficient for my sig overclock 24/7. Certainly 60/sub 60 full load for my cpu. 30-35 idle and sub 40 load for the GX2. I would have to do a proper test really though.

Here's a test I did a while back http://www.xtremesystems.org/forums/...&postcount=366, with the 8800gtx and stealth in the loop instead. Looking at the temps I could do with maybe a bit of a remount on my cpu block. Seems to be a bit hotter now.

RLM

[slugzkea]

Guys stick to the topic, this is about the GX2, not the Q6600.

I will say though, get an e8400 with that setup and you'll hit 22k.

Now, back to the GX2. Anybody going to take some pictures of the case off? I'm curious how some of you got such high clocks, how about a screenshot of ATITool showing no artifacts?

[slugzkea]

the intake is from the fan M8..
the exaust is from the back of the card..

No it's not.

Not mine anyways, take a cleanex and stick it behind the GX2 where your DVI ports are, it'll STICK.

that means the air is being pulled in from the back.

put the cleanex ontop of one of the fans on the GX2 in your case, it'll float, or fall off. that means the air is being pushed OUT.

[slugzkea]

I wouldn't bother. I tried it and it made no difference. Readings taken with a multimeter.

RLM

It probably made no difference because your Q is bottlenecking the card. If you were able to achieve higher clocks (performance gain or not) with the new 1.2v edit, then it does work, does it not?

[RLM]

It probably made no difference because your Q is bottlenecking the card. If you were able to achieve higher clocks (performance gain or not) with the new 1.2v edit, then it does work, does it not?

Completely wrong there mate. I said that I took volt readings with a multimeter. Give it a try though.

'new 1.2v edit?' are we getting crossed wires? I soldered volt mods onto my cards. Nothing bios related for 1.2v.

The vmod thread for 9800 Gx2 http://www.xtremesystems.org/forums/...d.php?t=180992

Guys stick to the topic, this is about the GX2, not the Q6600.

I will say though, get an e8400 with that setup and you'll hit 22k.

Probably, but no so good for 3d rendering.

RLM