i search for a good Bios for the DFI UT 790FX M2R

Any expectation on the clocks under Liquid Helium ?

Air Stable:

CPU: 4289MHz

MEM: 1900CL7 dual channel // 2000CL7 single channel memtest stable

NB: 3000MHz 3D stable

LN2 cooling

CPU: 5900 3DM06 stable

MEM: 1700CL7 stable (no 1800)

NB: 3000MHz 3D stable

I've taken the liberty to create a new subforum only for AMD Thuban overclocking experiences. If you're testing a new board or CPU, you can share your findings and ideas here. Also, if you have questions regarding overclocking the Thuban, just post it here.

Have fun!

just wondering if there is any dedicated bios on this Asus crosshair 5 formula Z to run hyper memory and PhenomII in the best condition.

best regards

Dx4

http://s783.photobucket.com/albums/yy111/Vouk/iasd%20pc%202/

http://extrahardware.cnews.cz/forum/viewtopic.php?f=30&t=16645&sid=80c6c16e634244fe3791b317237fb60d

Ambients was 10 C.

Since SF3D posted the latest Asus CIV bios on XtremeSystems, I decided to have a look inside the bios to check whether something interesting can be found in relation to the upcoming release of the Thuban series. In the past, I've done this already and it yielded me some decent results back then.

This time, again, some interesting bios strings could be found.

3 things to note in this screenshot:

1) It appears that ASUS has integrated CPU multipliers upto 35X, which is higher than the current physical limitation of 31,5x

2) The DRAM frequency multipliers go up to 2000MHz, whereas the highest memory multiplier on the Deneb processors was 1600MHz ... higher memory frequencies possible?

3) ECC support (not sure whether this was already in Deneb as well, just mentioning)

Especially the second point seems to be 'real' (I have no idea since I have neither the mainboard nor the CPU) since it comes back several times in the list of bios strings. Do note that there are several undocumented DRAM multipliers for the Deneb as well, but according to the mainboard manufacturers I've contacted, these were hardlocked by AMD. Given that they hardlocked it in the past, I can't imagine they wouldn't hardlock it again if the multiplier isn't supposed to be used ... so, DDR3-2000 might be a real divider?

For some reason, ASUS has added bios strings for a processor package containing 8 processor cores. This might just be some leftovers from the server CPU microcode (although that would be strange), so I've got no idea what it means. Maybe I should just be optimistic and hope there will be 8-core AM3 chips in the future (Bulldozer?).

SETUP:

- AMD Thuban 1090T

- MSI 790FX-GD70, bios variable

- Twintech 9600GT

- 2x 2GB OCZ Platinum DDR3-1600 CL8

- Antec TP 1KW

http://valid.canardpc.com/show_oc.php?id=1177696

Then when it made that and stable, i got greedy.

http://valid.canardpc.com/show_oc.php?id=1180972

I have changed RAM since these runs, and havent retested yet.

Old ram was Kingston HyperX 1600 (4x2GB)

Mods Rigs Registration:

http://www.evga.com/ModsRigs/detail.aspx?BuildID=21917

Current Specs:

AMD Phenom II X6 1090T

MSI NF980A SLI Motherboard

Antec Quattro 1000w

16 GB Patriot Sector 5 G Series DDR3 1600MHZ (4x4GB)

2 x GeForce GTX 285 in SLI

3 x Seagate Baracuda 500GB in RAID 0

ThermalTake ARMOR Extreme Case

Black Ice III 360x120 Radiator

Apogee Drive Waterblock/Main Pump - Pushes from CPU into radiator

Thermaltake P500 booster/backup pump - Pulls from Radiator to Reservoir

Radiator Setup

3 x Scythe UltraKaze 3500 RPM 120mm on Bottom

3 x Thermaltake Red LED Fans on Top

Coolmax Power Distribution Block, single molex feeds all 6 fans

Intel Lanfest DesertBash 2009 Case Mod Contest Winner, Featured in CPU Magazine.

For last month's OC challenge I was using the 790FX-GD70 as in a previous OC challenge it proved to be a very efficient board memory-wise. The problem was, however, that this board was very limited for PCMark runs. I had to run either:

- 325HTT, 3:8 866MHz CL6 or

- 342HTT, 1:2 684MHz CL5

With the 1:2 divider, I wasn't able to pass 330MHz and on LN2 I was completely HTT-limited at 370MHz. Not so good in other words.

Since yesterday, I have the C4E on the test bench for a while and ... in the first few tests, the board looks REALLY decent. Especially given that it's a DDR3 board. Here are some preliminary results.

Let's start, setting up everything with 1090T, C4F, 8800GTX and Kingston 2133C9 Kingston provided us for a review: testing to find maximum vga frequencies on air:

Phenny @ 4,25 and 8800gtx at his max on air:

8K cpu score on air, not bad!

Then we started to do insulation on Ryba/sf3d gpu pot, to find max frequencies for the 8800gtx without still vmodding it:

Gpu pot mounted, here we go:

We arrived at -120 on the 8800, but I have an old UEI DT200 that's going crazy, so take these temperatures with a grain of salt...

At -120, we managed to close at 783/1620/972...

Contact between pot and gpu, good!