Ocz Vx

daos · 04-20-2005, 03:06 PM

I recently purchased some OCZ PC3200 VX in hopes of overclocking it along with my mobile 2600+. the mobile does 2.5ghz all day long in my nf7-s at 1.8v prime stable. so i was hoping to transfer the CPU over to my DFI lanparty and get 250 x 10 out of the VX memory. I had the DFI vdimm modded and so i find that the VX is memtest clean at 250fsb 2-2-2-11 at 3.4v. If i give it 3.5, it will error out. also, if i bring the timings to 2-2-2-8 it will error out. this is on test 5 by the way.

i passed 55 passes on test 5 so i figure its pretty stable at 250fsb while using HellFires latest BIOS release Rev3. I fire up my computer into windows and it locks up while surfing the net. so i bring the clock speed down to 240fsb and run memtest. it passes with flying colors and i reboot. this time i run Super PI and it locks up. i bring it down to 200fsb x 12.5, and sure enough it locks up!

this is all on a fresh install and has only been running on this install for one day. is there something im missing here, or is memtest that far off? i dont understand how the memory can pass memtest at 250fsb and then i lock up in windows at 200fsb? i thought it might be the harddrive so i ran the western digital diagnostics and it passed every test with flying colors.

can anyone try and help me here. im at a loss and dont want to write this off just yet. i have faith in this memory and know its capable of becoming stable. i just need a little help along the way.

Thanks...

Sierra_abx · 04-20-2005, 03:31 PM

VX needs to be broken in. It usually is not going to do 260+ error-free right off the bat with very high VDimm. I would suggest burning in the RAM at 3.4v, then repeat burn in at 3.5v or higher.

I would also use a program like the A64 Tweaker and experiment with secondary timings.

Here are the settings that one of the OCZ reps was using.

daos · 04-20-2005, 03:39 PM

Im sorry, I am using the Lanparty B NFII motherboard. Sorry for the misunderstanding. Any suggestions on this platform?

Sierra_abx · 04-20-2005, 03:44 PM

Sorry, I misread your post. No advice for NF2, though I would imagine most of the settings, except tRAS, would be similar. There is a tweaker program for NF2 boards. You can find it here.

daos · 04-20-2005, 05:29 PM

has anyone had any success with this combination? i emailed OCZ about it, but they have yet to get back to me.

Clevor · 04-21-2005, 12:22 AM

Daos, on the NF2 platform, many a board is Memtest clean but not 3D stable. Have you tried other ram on the board and know for sure it does high fsb 3D stable? How about VTT? Tracking OK on that board?

If anything, some NF7-S guys have said the UTT stuff is the only ram they've tried that can run 240+, 2x512 at 1T 3D benchable, but I think that is more due to the latest D26 and later BIOSs.

Same deal here on the DFI NF4: Mushkin LevelII R2.0, new version with BP815 PCB, is Memtest clean all the way to 290, 2.5-3-3-6 but wildly unstable in 2D/3D even down to 270. No reply from Mushkin on this issue.

You might have to bump the VDIMM up a notch by 0.1 for stability with some of the Marks, but if the ram starts to error out (same deal with the Mushkin), you are out of luck.

So I take the Mushkin out and stick in the LEs. Didn't even bother to restore the OS or 3DMark (files may be corrupted), but bang, no problem passing 3D at 284.

I seen situations where the rig is Memtest clean at max fsb, but you have to drop down 3-5 mhz for 3D stability, but this is ridiculous.

A lot of times with ram it's black magic. If I didn't have other sticks to try, I'd swear the board was bad.

daos · 04-22-2005, 12:57 PM

well, its most likely the memory since on OCZ's website it says that VX memory should not be used with legacy NFII chipsets. im assuming that means all NFII chipsets.

can anyone confirm this?

04-20-2005, 03:06 PM	#1
daos Registered User Join Date: Jan 2003 Location: Baton Rouge,LA Posts: 185	Ocz Vx I recently purchased some OCZ PC3200 VX in hopes of overclocking it along with my mobile 2600+. the mobile does 2.5ghz all day long in my nf7-s at 1.8v prime stable. so i was hoping to transfer the CPU over to my DFI lanparty and get 250 x 10 out of the VX memory. I had the DFI vdimm modded and so i find that the VX is memtest clean at 250fsb 2-2-2-11 at 3.4v. If i give it 3.5, it will error out. also, if i bring the timings to 2-2-2-8 it will error out. this is on test 5 by the way. i passed 55 passes on test 5 so i figure its pretty stable at 250fsb while using HellFires latest BIOS release Rev3. I fire up my computer into windows and it locks up while surfing the net. so i bring the clock speed down to 240fsb and run memtest. it passes with flying colors and i reboot. this time i run Super PI and it locks up. i bring it down to 200fsb x 12.5, and sure enough it locks up! this is all on a fresh install and has only been running on this install for one day. is there something im missing here, or is memtest that far off? i dont understand how the memory can pass memtest at 250fsb and then i lock up in windows at 200fsb? i thought it might be the harddrive so i ran the western digital diagnostics and it passed every test with flying colors. can anyone try and help me here. im at a loss and dont want to write this off just yet. i have faith in this memory and know its capable of becoming stable. i just need a little help along the way. Thanks...
(Offline)

04-20-2005, 03:39 PM	#3
daos Registered User Join Date: Jan 2003 Location: Baton Rouge,LA Posts: 185	Im sorry, I am using the Lanparty B NFII motherboard. Sorry for the misunderstanding. Any suggestions on this platform?
(Offline)

04-20-2005, 03:44 PM	#4
Sierra_abx Registered User Join Date: Sep 2003 Posts: 13,880	Sorry, I misread your post. No advice for NF2, though I would imagine most of the settings, except tRAS, would be similar. There is a tweaker program for NF2 boards. You can find it here.
(Offline)

04-20-2005, 05:29 PM	#5
daos Registered User Join Date: Jan 2003 Location: Baton Rouge,LA Posts: 185	has anyone had any success with this combination? i emailed OCZ about it, but they have yet to get back to me.
(Offline)

04-21-2005, 12:22 AM	#6
Clevor Registered User Join Date: Apr 2002 Posts: 1,131	Daos, on the NF2 platform, many a board is Memtest clean but not 3D stable. Have you tried other ram on the board and know for sure it does high fsb 3D stable? How about VTT? Tracking OK on that board? If anything, some NF7-S guys have said the UTT stuff is the only ram they've tried that can run 240+, 2x512 at 1T 3D benchable, but I think that is more due to the latest D26 and later BIOSs. Same deal here on the DFI NF4: Mushkin LevelII R2.0, new version with BP815 PCB, is Memtest clean all the way to 290, 2.5-3-3-6 but wildly unstable in 2D/3D even down to 270. No reply from Mushkin on this issue. You might have to bump the VDIMM up a notch by 0.1 for stability with some of the Marks, but if the ram starts to error out (same deal with the Mushkin), you are out of luck. So I take the Mushkin out and stick in the LEs. Didn't even bother to restore the OS or 3DMark (files may be corrupted), but bang, no problem passing 3D at 284. I seen situations where the rig is Memtest clean at max fsb, but you have to drop down 3-5 mhz for 3D stability, but this is ridiculous. A lot of times with ram it's black magic. If I didn't have other sticks to try, I'd swear the board was bad. __________________ AI7, Rev. 1.0 2.40C, 3326 MO Step CR 304 fsb, 3.65 gig 1.69 VCORE Corsair HC200 2x512 MB PQI TCCD, 5:4 , 2-3-3-6 @ 2.9 VDIMM, Sr-Enh-A-D-D Sandra unbuffered: 3500+ (Partial PAT) 3D STABLE folks!
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04-22-2005, 12:57 PM	#7
daos Registered User Join Date: Jan 2003 Location: Baton Rouge,LA Posts: 185	well, its most likely the memory since on OCZ's website it says that VX memory should not be used with legacy NFII chipsets. im assuming that means all NFII chipsets. can anyone confirm this?
(Offline)

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