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I5 760 + Asus P7P55D-E Pro Unstable (Please Help)

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December 6, 2010 12:21:06 AM

Hi all,

I apologize in advance. I am new to this...I recently built my first build and I am running the stability tests suggested in the step-by-step building guide on Tom's forum. I ran memtest85+ ( 10 passes, no errors). However, when I run Prime95 it only takes a minute or two for all core temps to reach mid 70's at which point I stopped the test (Prime95 doesn't report any errors, rather I stop the test because I have read that letting temps get higher than this can damage the CPU). According to Real Temps, all cores idle at 28-31C. I have have made no changes to bios. I am running everything at stock settings (no overclocking). While Newegg lists my memory as DDR3-1600 7-9-7-24, my bios seems to recognize it at lower than 1600 and 9-9-9-24. All the drivers/BIOS are stock drivers that came with hardware (except for GPU for which I downloaded the latest drivers for). I am currently using the stock Intel cooler, with pre-applied thermal paste.

My current build is this:

CPU: Intel Core i5-760 Lynnfield 2.8GHz 8MB L3 Cache LGA 1156 95W Quad-Core Desktop Processor
Mobo: ASUS P7P55D-E Pro 1156 Intel P55 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
GPU: EVGA 01G-P3-1373-AR GeForce GTX 460 (Fermi) Superclocked EE 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready
RAM: Mushkin Enhanced Blackline 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model 996782
SLI Support Video Card
PSU: Corsair TX850
Optical Drive: ASUS Black 24X DVD+R 8X DVD+RW 12X DVD+R DL 24X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 24X DVD Burner - Bulk - OEM
HDD:SAMSUNG Spinpoint F3 HD103SJ 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive.

Can anyone tell me what normal idling core temps are for my build? What should core temps be hitting when under full load using Prime 95?

And does anyone have any ideas on what I can do about the overheating issue. Do I need to RMA my CPU?

Thank you!

Boogie
a b B Homebuilt system
December 7, 2010 1:33:56 PM

The temps are all fine, assuming ambient is close to room temp.

Not sure what case or HSF you have, but those two components along with ambient have a huge impact on both ambient and load temps. Hence, why there is no "standard."

CPU's will throttle themselves if they get too hot, those CPU's are fine in the mid 70's. In fact, that's very comfortable temps for them. No need to start worrying till you get into the high 80's.

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