I have now confirmed from AMD that when running Phenom II X4 with LN2 HyperTransport link has to be in HT 1.0 mode (running 1 GHz) to prevent CPU cold bugging. AMD suggested us using this setting in Chicago event and we had no problems hitting +6 GHz.
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Hi everyone, I got back home from Chicago last night where AMD organized Dragon platform preview event.
First of all huge thanks to AMD (Macci, Simon, Pete and everyone) for inviting Team Finland (Sampsa & SF3D) to the Dragon event. It sure was a nice opportunity to run some first tests with Phenom II X4 and LN2 cooling.
Me pouring LN2, no need to fine tune temps
Chilly system running full steam
Gigabyte's 790GX retail board
Kingpin's F1 EE full of LN2, this was so sweet
Typical Vcore we used
Macci playing around with Dragon EVO pot
SF3D: "WTF?!"
Here is a CPU-Z shot after some minutes of testing
Quick summary:
- All the Phenom II X4 CPUs me and SF3D tested had no cold bug at all
- All the chips we tested could do +6,1 GHz CPU-Z
- We tested with AMD's 790GX reference board and Gigabyte's retail 790GX
- Both mobos worked fine under cold, +6 GHz and +1,95V vcore
- Vcore ~1,95V was optimal for +6 GHz clocks
- 3DMark05 & 06 CPU-tests were ok @ 6 GHz
- We were able to run Crysis @ 6,1 GHz (2 loops CPU-test)
- Max CPU-Z screenshot and validation we got with 4 cores was 6280 MHz (no dirty tricks)
- With air cooling (Cooler Master Z600) highest we got Crysis stable was @ 4,13 GHz (1,58 V)
We tested couple different revisions (ES and newer ones) but lets see how it turns out when retail chips will be launched.
I don't want to make any promises but I encourage everyone to go ahead and test yourself.
These results were definitely not maximum numbers possible to achieve.. and there might be some extremely cool (literally) numbers coming soon
More pics, ss and video coming soon
If you have any questions, I'm more than happy to answer (no peformance numbers because of NDA).
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Favourite game: 3DMark
Work: Muropaketti.com - Finnish hardware site
Hobby: overclocking.fi - Extreme overclocking: Team Finland
Wow!! Very very nice. I wish I could have been there Thanks for all the info and details on your benches. It will be very handy. To get the 1.95vCore.. was the board vModded? You mentioned reference motherboards, so i am just curious.
We were just aiming for high CPU clocks, AMD had used that setting previously so we just left it there. We only had couple of hours to spend so unfortunately we couldn't focus on everything. We have CPUs now back home so we can start tuning for best performance
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Favourite game: 3DMark
Work: Muropaketti.com - Finnish hardware site
Hobby: overclocking.fi - Extreme overclocking: Team Finland
We were just aiming for high CPU clocks, AMD had used that setting previously so we just left it there. We only had couple of hours to spend so unfortunately we couldn't focus on everything. We have CPUs now back home so we can start tuning for best performance
Wow!! Very very nice. I wish I could have been there Thanks for all the info and details on your benches. It will be very handy. To get the 1.95vCore.. was the board vModded? You mentioned reference motherboards, so i am just curious.
Ton
Hi, AMD's reference board had vcore mod but Gigabyte's board was retail without mods. We adjusted vcore straight from BIOS and it was good to go
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Favourite game: 3DMark
Work: Muropaketti.com - Finnish hardware site
Hobby: overclocking.fi - Extreme overclocking: Team Finland
wouldnt the 790FX do a bit better?
i was just wondering about the board, because i bought the same mobo about a week ago for $135 u.s ^^
Yes 790FX + SB750 is probably the best platform for Phenom II X4 especially Asus M3A79-T Deluxe since it has 6 layer PCB. I have this back home so I'll try it next.
__________________
Favourite game: 3DMark
Work: Muropaketti.com - Finnish hardware site
Hobby: overclocking.fi - Extreme overclocking: Team Finland
It was an awesome event and you guys did a really good job. It was pretty intense watching the 3Dmark run through and not knowing if it was gonna finish.
I'd like to clear something up though, there's been some mixed thoughts on the whole 790GX/FX ordeal. 790FX/SB750 = 65nm and 790GX/SB750 = 55nm or are they both built on the 55nn?
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Lian Li v1010 - MSI GD70 - X4 965 @ 3.8 1.4v / NB 2.6ghz 1.25v - 4gb OCZ DDR3 1333 6-6-6-24 1.65v - 5870 1050/1300 1.25v - 120gb Agility - 1TB Caviar Black - X-Fi Forte - Corsair HX850
LC loop soon. Have: RX360, HK3.0 Lt, Micro Res v2, Primoflex Pro 7/16 ID, Watercool DDC Top. Need: DDC 3.25, Fans and Fittings.
I'd like to clear something up though, there's been some mixed thoughts on the whole 790GX/FX ordeal. 790FX/SB750 = 65nm and 790GX/SB750 = 55nm or are they both built on the 55nn?
AFAIK 790FX = 65 nm and 790GX = 55 nm.
__________________
Favourite game: 3DMark
Work: Muropaketti.com - Finnish hardware site
Hobby: overclocking.fi - Extreme overclocking: Team Finland
Oh, you'd be surprised how similar to Finland it is. Alcohol consumption levels are similar, the only difference is that in England you're in a pub making a fool of yourself, in Finland you're in a forest where nobody can see you.
- 3DMark05 & 06 CPU-tests were ok @ 6 GHz
- We were able to run Crysis @ 6,1 GHz (2 loops CPU-test)
- Max CPU-Z screenshot and validation we got with 4 cores was 6280 MHz (no dirty tricks)
Thanks for all the info and details on your benches. It will be very handy. To get the 1.95vCore.. was the board vModded? You mentioned reference motherboards, so i am just curious.
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- 120gb Agility - 1TB Caviar Black - X-Fi Forte - Corsair HX850
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