THE Asus P5E X38 Thread

[ericeod]

I've seen many posts asking the difference between the x38 and P35 chipsets, so here you go:

Source: X-bit labs

The newer chipset acquired XMP (Extended Memory Profiles) technology support. It is somewhat similar to Nvidia EPP (Enhanced Performance Profiles) Intel introduced for DDR3 SDRAM. In fact, it implies SPP extensions with information needed to use these memory modules for overclocking needs. Corresponding profiles added to the SPD bear the info on frequency, voltage and timings settings.

These are about the only differences between X38 and P35. However everything we have just mentioned turned out more than enough to require significant changes in the North Bridge of the new core logic. Of course, it affected the heat dissipation in the first place. The Intel X38 North Bridge features 36.5W typical heat dissipation, while the same characteristic for Intel P35 equals only 16W. Although the new chipset is manufactured using pretty up-to-date 65nm production process, the high TDP forced Intel to equip the chip with the same type of a heat-spreader lid that we have only seen on CPUs and server chipsets before.

Intel X38 chipset costs $50, which is about $20 more than the price of Intel P35.

[JustMe2]

3.4ghz on siggy rig, except Ballistix 6400 2x1
8x425, ram was 5-5-5-15 1021

I dont know how much moving from 2gigs to 4gigs is going to hender my oc. I'll prob have time to play with it Monday.

Edit: Using 0501

[cerealk1ll3r]

When I went from 2x1 to 4x1 Ballistix, for some reason I wasn't able to tweak out my RAM as much after that. I can't OC the ram past 975, and even touching the timings just ends in a BSOD. Anybody else have a similar problem?

[Emmanuel]

Similiar problems here with Lanfest, tweaking single timings results in errors in memtest, tweaking the voltage by setting it to 2.2v results in errors as well, have to leave it on auto...

[ericeod]

I'm running the 502 bios and havent had a problem with the ram yet. I've only tried running them at 900, but I'll crank them up for you guys and see what issues there are.

I will update this post with results.

[cerealk1ll3r]

Instead of increasing the speed, try tightening the timings. I can get my RAM to DDR2-1175 and it will post, but I leave all the timings on auto. Voltage is set to 2.2v. Even touching the clock twister or the boost thingy, I forgot the name, will not post.

[XxSilent22xX]

Well i set my ram at 1066 and set the timing's manually and set the voltage to 2.24 and i ran memtest and did 6 pass's and found 7 error's im still tweaking my ram i havnt had much time to with the holiday here but i dont know if the error's are the actual ram or what.. but im looking into my problem's and all of your's too for solutions and im hoping to find one.. but in the mean time hang with me and MERRY CHRISTMAS!!! - XxSilent22xX

[ericeod]

I'm currently running testing at 500 FSB x7 multi = 3.5GHz with only 1.4v to the NB and my ram 1:1.

It is 2 hrs into Orthos, but I will update when I finish all tests. I'm also going to try and lower my chipset vlotage to see how low I can run it.

[JustMe2]

I'm currently testing 400FSB x8 multi=3.2. RAM 3-3-3-10 800 1:1. One hour prime stable.

Mine won't run 3.4 anymore, I'm sad. I can't get it prime stable. I've upped all the volts. Still a no go.

[ericeod]

Originally Posted by JustMe2

I'm currently testing 400FSB x8 multi=3.2. RAM 3-3-3-10 800 1:1. One hour prime stable.

Mine won't run 3.4 anymore, I'm sad. I can't get it prime stable. I've upped all the volts. Still a no go.

I've got to run some errands, but when I get back I'll look at your settings. Post your voltages and FSB/ram settings.