change command rate

batchie · 4 May 2007 at 23:13

can anybody tell me were to change the memory command rate on a commando mobo,managed to overclock to over 3ghz but unable to find command rate value in bios

w3bbo · 4 May 2007 at 23:20

It should be with the memory settings.

Jaffa_Cake · 5 May 2007 at 00:01

If your using a gigabyte mobo then they try and hide these settings. Hit Control-F1 in the main bios screen and it will appear. Thats only for some gigabyte mobos.

Mekrel · 5 May 2007 at 00:11

965 is an intel chipset isn't it so it won't do 1T clocking as far as I'm aware?

steve258 · 5 May 2007 at 08:04

Yeah AFAIK command rate option is only available on Nvidia Chipset or the RD600 I think.

w3bbo · 5 May 2007 at 11:40

Oops yeah-intel don't do 1T.

Nelly · 5 May 2007 at 14:15

Mekrel said:
965 is an intel chipset isn't it so it won't do 1T clocking as far as I'm aware?

Abit AB9 QuadGT does 1T Command Rate. :cool:

DFI P965-S Dark Infinity has something called Enhanced Addressing :cool:

raja said:
hey bud,

the board a function known as 'Enhhanced Addressing', which drops memory latency by about 5ns, you could call this 1t under another name. The board can hold this function all the way to ddr1000 quite stable and will go beyond for benching. Performance at this time at high fsb appears faster than any other 965 board, the fsb advantage this board has over the 975 has it's merits to when benchmarking with lower multiplier locked cpu's.

I have just plugged my qx6700 in now and need to get some results together. Most of the benchmarking results will go up at the OCZ hwbot team section, but I will pop the links to the images back here if you are interested.

regards
Raja

Mekrel · 5 May 2007 at 14:24

Both of which are not your usual 1T as we know them, but they give the same effect.

Nelly · 5 May 2007 at 16:21

Mekrel said:
Both of which are not your usual 1T as we know them, but they give the same effect.

How come? 1T Command Rate is in the bios options on the Abit AB9 QuadGT.

Mekrel · 5 May 2007 at 16:41

It's basically a hack kind of way of doing it when intels specifcation do not support it. I'm not sure exactly how Abit and such do it, or whats behind it.

Same as how AMD64 chips didn't do 400DDR 1T with all four banks used as the actual memory controllers didn't support, but with CFX3200 Oskar Wuu made it so it had a 1T ability under these conditions and I did read that it was to do with drive strengths.

Not that it is a bad thing, more performance is good up to a certain point. One of the thing that is hard to grasp with Intel setups is faster is not always better in terms of raw FSB and memory speed. Throw in sync/async, chipset straps and 1T only reaching certain clocks before crapping out means it's a lot of variables to take into consideration when finding the best performance.

Nelly · 5 May 2007 at 17:13

Ahhh I see lol

I wasnt trying to catch you out or anything, I just wanted to know thats all.

Would love to see how far 1T command rate can go with high FSB on the 680i/R600 series.

Mekrel · 5 May 2007 at 21:30

The last few posts about the 680LT on the DFI LP is about how far FSB scales and it switches at around 500FSB to slower strap.

Can't remember the results for 1T but they are posted about too I believe.