Help me burn in my 4000vx!

[jc2mm2]

Hi there! :D

Anyway, I'm having troubles burning in my mems (2x512) already burned it in from 250Mhz @ 2-2-2-6 w/ 3.3vdimm for more than 30 hours, then moved up to 2-2-2-5 w/ same vdimm, it was ok too. burned it a bit for 10 hours. :D Now, I tried to do it 255Mhz @ 2-2-2-5, it was ok for an hour, but then it had too many errors, then i increased the voltage to 3.4vdimm, same problem, not that much though compared w/ 3.3vdimm.

Pls help me, what should I do next? How can I get it to be stable? I want to have Pol's timings (1.5-2-2-0 @ 255Mhz w/ 3.5vdimm) but right now, it seems Im stuck... pls help me guys :D thanks a lot :D

[[XC] leviathan18]

just use a flamethrower and :explode2:

[x3ro]

Just try to increase the volts a bit and find the mem's sweetspot... GL

Regards

[jc2mm2]

@x3r0
its already at 3.4vdimm, i think it is already a bit too high for a 255mhz @ 2-2-2-5. Althought Pol was able to reach 255mhz @ 2-2-2-4 w/ 3.4vdimm without any troubles.... Should another 10 hours of burn in be enough?

[mikead_99]

Seems like with my SD FX my VX needs more volts than it did with other cpu's. I don't know if that is common or not but with one cpu I only needed 3.17V for 250 MHz stable, most others needed 3.25V to do that and with this FX I need 3.4V @ 250 MHz. If that is a common trend with SD's, than it sounds like you are in the ballpark with volts.

You haven't said what test gives you errors, how many errors, or shown the other mem timings so it'll be kinda hard to say what you should try.

[KILLorBE]

Just because someone else was able to reach those speeds doesn't mean everybody will, as long as your sticks will run at the advertised speeds/timings everything is fine.

All I can say is, increase the voltage a bit more...I mean it's VX for a reason :fact:

BTW: I'm running 2x512 Value VX and one stick craps out @ ~237 2-2-2-5 3.23V, The other stick does ~250 2-2-2-5 @ 3.23V
**NOTE** The current BIOS on my DFI nF3 Ultra-D only goes upto 3.2V

[craig588]

Have you taken the heatspreaders off?

I go all the way to 3.7 for any BH based chips, 3.4 isn't enough.



Just for your information, A64s don't have a CAS 1.5 setting.

[SIOUX]

Just for your information, A64s don't have a CAS 1.5 setting.[/QUOTE]

no..thats right, but sometimes it helps for stability:)

[Vapor]

Yes, it's an alternative setting to CAS2 that loses ~.005% of performance and can sometimes add a MHz worth of stability....

Anyway, the best burn in is in Memtest....find a speed/voltage where you only get a few errors in memtest per pass and just let it roll at that speed. After awhile, you'll get zero errors.....keep repeating the process until you stop gaining.

[Supertim0r]

Depend on your set... my first gig of vx3200 wasn't stable @ 245fsb no matter volts. My current set of VX4000 run 260fsb 1.5-2-2-5 @ 3.26v since the first day I got it. Haven't tried more ;)
They should do at least 250 3.3v

[dogsx2]

[QUOTE=Vapor]Yes, it's an alternative setting to CAS2 that loses ~.005% of performance and can sometimes add a MHz worth of stability....

I believe you Vapor, I am just curious how you arrived at the .005%? :D

[jc2mm2]

whoa... thanks for the help :D

I did a 255Mhz @ 2-2-2-4 w/ 3.4vdimm, first few hours was like 4-5 errors per 1-2 loops, then around 18 hours, it dropped to 2-4 errors, some loops won't have any errors, some would. I stopped because I can't really see any significant increase :( should I continue to burn it in?

[KingYubbo]

Looks like it's getting there slowly. Remember the recommended burn in time is 24-48 hours.

[jc2mm2]

since I stopped @ 20 hours, should I re-burn it again for 24-48 hours?"D

[jc2mm2]

anyway, thanks guys for all your help :D thanks to you guys, i was able to reach it too. :D

http://valid.x86-secret.com/show_oc?id=44376
http://img351.imageshack.us/img351/6126/oc6ti.jpg

Now, I hope theres a way to increase the mhz of my 4000vx :(