8gb ram and motherboard temperature?

[qq]

I used to have 4 sticks of 1gb OCZ platinum DDR2 800 RAM 4-4-4-12 2.1v. Recently I upgraded to 8gb of ram, 2gb crucial ballistix DDR2 800 4-4-4-12 2.0v. The first thing I noticed is my board temperature run about 5-7C hotter than when I was using 4gb of ram, is that normal? Initially I thought it was the thermalpaste going out, so I replaced it with a fresh layer of AS5. I just did a over night of prime95 blend, it was stable for 10 hours+ until I stopped it this morning.

Spec
Asus P5k-E motherboard with thermaltake spirit copper NB cooler
E8500 E0 @ 4209mhz 443x9.5 with thermaltake cl-p0024 cooler 92mm vantek stealth fan
8gb crucial DDR2 800 run at 887mhz 5-5-5-15
Corsair CX400 power supply
Asus GTS250 1gb 740/1836/2200
Antec 300 case

Temps
CPU idle = 31/38c, load with OCCT linpack64 bit = 70/71c, prime95 small fft = 58/55c
Board idle = 38c, load with prime95 large fft = 51c (used to be 44 - 46??)
GPU idle = 35c, load with OCCT GPU test = 70c 25% fan speed

BIOS setting

Ratio = 9.5x
Strap = 333mhz
FSB = 443mhz
DRAM = 887mhz 5-5-5-15 2T
PCI-E = 100mhz

Transaction booster = enabled level 3

CPU VCore = 1.3375 (1.32v idle 1.312v load in windows)
CPU VTT = 1.10v
CPU PLL = 1.50v
NB = 1.4v
SB = 1.05v
Memory = 1.90v
Load Line = Enabled
CPU GTL = Auto
NB GTL = Auto
CPU Spread Spectrum = disabled
PCI-E Spread Spec = disabled

I tried to o/c the ram to 4-4-4-12 @ 2.0v, it failed memtest86. I upped all the way to 2.2v with 0.05v increment, no luck. I tried 1064mhz 5-5-5-15 @ 2.0 - 2.2v, no luck either. Should I go higher with the voltage? I used to run 4 sticks of 1gb ocz platinum ram 1064mhz 5-5-5-15 or 887mhz 4-4-4-12 @ 2.1v without any issues.

Thanks

 

[beenthere]

The temp increase with 8 GB. seems reasonable. A little more case airflow may drop it a degree or two but certainly you can expect there to be more heat from doubling the memory, especially when running it under load.

 

[xoke]

The Ram probably doesn't need more voltage. It's whats controlling the Ram that is struggling now that you have doubled the amount. In your case that would be your NB voltage and FSB (or equivalent) voltage that probably needs some adjustment.

First off, I would set the timings back to auto until you get the Ram at the speed you desire, then once stable, start reworking them. Keep in mind you may not be able to run the same speeds and timings as you did before regardless of the voltage you select now that you have more Ram.

You might also play around with your strap settings, since you are shooting for over a 400 fsb you might want to head up to the 400 strap. This may or may not be your issue...just ideas for you to play around with. Running four big sticks of Ram is tough on all memory controllers and may require some compromises in speed.

 

[qq]

I can hit upto 525mhz FSB with 333mhz strap when I am still using 4 sticks of OCZ platinum RAM. I was running with everything the same like I have right now except RAM voltage is set to 2.1v, FSB to 525mhz and ratio to 8x. You are correct about my board produce more heat when I double the memory. When I take off 8gb of RAM and put back the 4gb I used to have, I get 44-46c load temperature with prime95 large FFT I can boot to windows and play games without any issues when I set my DRAM voltage to 2.2v @ 887mhz 4-4-4-12 or 1064mhz 5-5-5-15. But the problem is when I run memtest86 v4.0 or orthos large fft, the system will lock up within 5 minutes. I do not experience any BSOD or error produced in memtest86. I would use 400mhz strap, but the problem is I will get lower memory performance which defeat the purpose of making my ram stable at 4-4-4-12 887mhz or 5-5-5-15 1064mhz. Thanks for your help, I guess I will settle with lower voltage at higher latency.