E4300 Overclock Fail - Why?

Right. I was wondering if anyone here could shed some light onto why my overclock fails past a certain point. System specs first of all.

Asus P5N 32 - SLI Premium
Intel E4300 (Stock HS/Fan)
Palit 8800gt Sonic
2 x 1gb Kingston ValuRAM (yes, it's cheap as all hell. I don't care. )

So.

I Overclock to 1066fsb, giving me a 2.4ghz clock speed. Memory timings of Auto give 5-5-5-15-20. Run Orphos, CoreTemp and Rightmark CPU to check temps. Runs fine. Left it for hours stressing CPU specifically, as well as the Blend option to stress RAM and CPU. Stable as all hell. (Max temps were about 55 degrees on both cores.)

Then, I copy files over from either my external HD or my second internal, and it crashes. With the external it was USB BugCode BSoD, with the internal it's just a Machine Exception Error. Under no other situations does it crash. I played Empire: Total War for a couple of hours, and it was fine; copy a couple of files over and it always crashes after a couple of minutes or so.

Currently, I've got it oc'd to 2.84ghz, and it's stable throughout, which isn't too bad, but I've googled and can't find anyone else who has had this problem. I've tried everything I can think of - changing memory timings, upping voltage... Everything.

Any help? I'm not bothered if I can't OC it above where it is now, but I really would like to know why I'm the only one with this problem, and whether it's possible to overcome it.

Thanks.

Well what speed is your ram? If its 800mhz and your running it at 1066 then it will surely fail. Set your fsb/cpu ratio so that the ram runs 800 or under and you should be fine.

I'm thinking that your SATA drivers are overclocked as well, causing the problems.

Again what speed is your ram?????

533 is 1066 (533xddr2=1066)

Doesnt seem you changed anything at all.

You were overclocking your 667 ram to 1333?? Are you serious?

Now your overclocking your 667 ram to 1066? Dude, you have no idea what your doing. You shouldnt be going above 333 and your at 533.

Again you need to change your cpu ratio so that the ram stays around 333mhz. You should be hitting 2.8ghz no problem.

Of course cause your memory is supposed to run at 333x2, any higher and your memory is going to fry.
You can up your fsb to overclock your processor but you have to set the cpu ratio so that the ram doesnt go over 333. Get it?

According to that shot, your underclocking your memory to 266mhz (533), it is capable of running at 667, so up your fsb and overclock your processor to the point where your ram is running closer to 667.

Dude, I have no idea what your doing. What do you mean you moved the fsb to 970?? FSB at 300x9 would be 2.7ghz, FSB at 333x9 would be 3ghz.
Where are you getting 970 from?

I think your confused.

I dont understand what your multiplying by 4.

Its FSB (266) X Multiplier (9) = 2.4ghz

Dont worry about "rated fsb". Worry about "bus speed", you dont want your bus speed to go over 333.(667)

yeah, i would just keep the ram at 266Mhz (ddr533) the results that you would get from upping to 333Mhz with 5-5-5-15 timings would not be noticeable, and you can have your ram running cooler meaning greater change from stability. basically, the settings in your pic should be fine. in theory of course.

See, this is the thing. The settings in the pic look fine. But it BSoDs on copying files when I use those settings. I mean, if the CPU-Z pics look fine to everyone else, then why shouldn't it run fine? I've already tried it with the 5-5-5-15 timings, and it does the same thing. I'm about to do a memtest, but I don't see why the memory should fail when it's fine when I don't oc it. :s

EDIT: Updated the bios purely as a shot in the dark, since no-where does it say that it fixes anything like this. It appears to be working fine on 266 x 9 = 2.4ghz, 533mhz memory (FSB-DRAM 1:1), timings of 5-5-5-15-20. If anyone else with his mobo and cpu comes across this, update your bios.

Thats one of the easiest processors ever made for overclocking. I think you should take advantage of the cheap prices and get some better ram.
I dont think you need to bump voltage on the cpu either, I get 3.4 from my 1.86 with an undervolt, but it gets a bit too hot in the summer so I keep it at 3.03.

Quick update.

OC was fine for a couple of days, then started failing on copying files again. Spent most of today checking settings, with no luck. Then lowered the LDT multplier down from 5X to 3X. Seems to have solved all the problems for now. Really strange - no other person on the internet has had this specific problem, and as far as I can tell only one other person on the 'net had their overclocking problems disappear after lowering the LDT.