Hello again for the 3rd time
Because I gathered some cards, I decided to bench them with my 975 under LN2. In the last moment my friend decided to put his i5 750 under LN2 so we benched that too.
2 setups that we used were build of these components:
- Intel i5 750
- MSI P55-GD65
- 2x2GB G-Skill Ripjaws 1333MHz CL9 9-9-24
- XFX GeForce GTX260
- Corsair TX750
- Intel i7 975 EE
- Asus Rampage II Extreme (1504 BIOS)
- 3x1GB Mushkin XP3 1600MHz CL7 8-7-20
- Corsair TX750
List of cards that we had on disposal:
Sapphire Radeon HD5850 1GB
XFX GeForce GTX260 Core Edition 216sp 55nm (x2)
PoV Premium GeForce GTX260 Exo Edition 65nm
XFX GeForce 7600GT 650M
Day before the session I did the vGPU mod on 7600GT and tested it on air. She passed 3DM06 on 750/975MHz with 1.4V so I hoped that under LN2 i'll get atleast 900MHz on core. Unfortunately I was wrong, but about that later...
First we started with i5 750.
Pouring of LN2 in thermos bottles.
After we finished with 750 i have insulated my RIIE and 7600GT.
My 975 was really happy because he was going under LN2 again
After the insulation I have mounted pot's on CPU and GPU and we were ready for action.
Some nice pics
I just needed to find max frequency of 7600GT because I already knew from before what 975 can do. Unfortunately we realised that card had OVP above 1.525V (we were geting blackouts above 1.525V) so I didnt had any other choice but to find max stable core clock on that voltage and run tests.
With 1.525V I was able to bench on 850/975MHz frequencies. Even on that frequencies card was sometimes unstable and 3DM06 crashed because voltage of GPU had pretty big oscilations (from 1.5V-1.525V). Yeah, I know, CAP mod was necessary just like OVP mod but I didn't know how to make OVP mod and when i was runing tests on air voltage oscilations weren't so big.
We were focused on 3DM06 because all other tests profit with high CPU frequencies. We were able to get 6th place on hwbot with that frequencies, only 130 points under the first place
After playing with 7600GT we went out on the balcony where temperature was around -10° (unfortunately too high).
I decided to try GTX260's in SLI but had some weird problems. System had random freezes and reboots. About half an hour after trying to stabilize system I gave up and took HD5850.
Even she was pretty bad overclocker I managed to get some decent scores with her (1st place in 3DM06... Hit me with backups and cards under LN2).
After HD5850 I decided to bench my golden GTX260 which on cold air (~-20°) and stock voltage can do 800/1600/1380MHz but I was unable to reach these clocks because the temperature was too high so I didn't run 3DM06.
I think that TX750 was the main problem while runing SLI with GTX260 because Aquamark (which is not so demanding as 3DMarks) passed normaly.
SCORES
- i5 750 - 2D -
wPrime 32M
wPrime 1024M
SuperPi 1M
PiFast
Max frequency
Max BCLK that we managed to achieve was 247MHz but we didn't get validation because we tried 248 and failed
- 3D -
XFX GeForce 7600GT 650M
3DMark 06
XFX GeForce GTX260
3DMark 01SE
3DMark 05
Aquamark3
XFX GTX260 + PoV GTX 260
Aquamark3
Sapphire Radeon HD5850
3DMark 03
3DMark 05
3DMark 06
Aquamark3
In the end, we were satisfied with achieved results, specially with 750
Till nex time... Byeee
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Originally Posted by Hunt3r_Br
3DMark2001SE -> Favourite Game!
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