CPU temp increased when i up the dram frequency?

[kiwi76]

HI guys,

I am running i7 950 with asus P6X58D premium mobo with dual ddr3-1600 ram. The board set the dram frequency intially at 1033 mhz which i ran prime 95 using that speed. Subsequently, i push the dram frequency to its specs (1600 mhz) and my cpu overall temp increases by abt 7-10c without any oc on my machine. Any idea why is that so??

 

[Motopsychojdn]

Because you are making the ram run faster,
therefore it creates more heat.
dont touch your Northbridge hehe
Moto

 

[JackNaylorPE]

Two things happened:

1. By increasing your RAM multiplier to 12 (The BIOS does this for you when you select 1600), you did increase what's going on with the RAM and therefore the heat in your case increases a very slight bit which will affect everything in the computer to a very small amount.

2. The big change in CPU temps however is more likely due to the fact that in order to hit that speed, it upped the DRAM voltage which is controlled by the CPU. Ever read the warnings about hi RAM voltage damaging the CPU, that's what they talking about.

Not many peeps are buying DDR3-1600 so they can run their RAM at a higher speed. Increasing the RAM frequency will have minimal effect on system performance as it just increases RAM speed. If that's the goal, why not DDR2000 ?

Increasing the BCLK will increase the speed of "the system" most importantly the CPU. Let's look at a few scenarios:

Stock
BCLK - 133
CPU Multiplier of 24 - 3.2 GHz
Mem Multiplier of 8 = 1066

Your setup
BCLK - 133
CPU Multiplier of 24 - 3.2 GHz
Mem Multiplier of 12 = 1600

20% OC
BCLK - 160
CPU Multiplier of 24 - 3.84 GHz
Mem Multiplier of 10 - 1600

25% OC
BCLK - 167
CPU Multiplier of 24 - 4.0 GHz
Mem Multiplier of 8 - 1333

25% OC
BCLK - 167
CPU Multiplier of 24 - 4.0 GHz
Mem Multiplier of 8 - 1333

50% OC
BCLK - 200
CPU Multiplier of 20 - 4.0 GHz
Mem Multiplier of 8 - 1600

Here's a "How to" on accomplishing a successful OC

http://vip.asus.com/forum/view.aspx?id=20081220191040237&board_id=1&model=P6T+Deluxe&page=1&SLanguage=en-us