OPtiPlex 745 Bios Limits

[745tree]

Sorry if this is the wrong place. I am having issues with my optiplex 745, which at the end of the day, has not failed me since I got it 3 years ago.

I put a new e6400 processor in it and the multiplier is locked at 6x, I need it locked at 8x so it runs the full 2.1ghz.

Ive used crystalcpu and it will set the multiplier to 8x for about 3 seconds.. its a big deal because the old e6300 was a 1.9 @ 6x and this is only 1.6@6.

If this is the wrong place, once again sorry. And also I know this is a dell, but I actually bought it in a bundle i MADE money off of. and I upgrade to new specs

4 gigs corsair xms2-6400
AMD 5450
e6400
win7 64bit

I love this computer, and I see the speed step [enabled or disabled it still locks it at 6] working sometimes it will go to 8x.. but as [censored] as I am I NEED it to stay at 8x lol.

thanks guys

[1234s282]

Dell have their own special format of bios so theres not a lot we can do , hopefully TheWiz may know something on this!

Admin

[TheWiz]

Sounds like an ACPI thing. Disabling Speedstep and C1E support will disable the BIOS form setting the multi lower than max. If you still aren't getting full throughput I suggest trying NVIDIA OC Tools. Because its an ACPI issue its pretty near impossible to pinpont what's pushing it back, and because its not a CPU detection issue the above suggestion is your best shot.

Thanks,
TheWiz

[Faiakes]

Hi

If I may revive this. Is it possible to mod the 2.6.6 BIOS to allow for RAM voltage selection?

I want to increase RAM voltage to 2.0 for my CL4 RAM.