DDR2 OCZ SLI-Ready 2GB PC2-6400

[Warboy]

So, has anybody used them before? if so, Whats the Max timings and clock speed anybody has reached with them. I ordered them as replacement ram for my Kingston HyperX PC2-6400 CAS 5.

[BenchZowner]

Thread should be moved to General Memory or OCZ Support section...

I don't have the necessary information ( chips used ) to estimate anything for you.
But I'm sure RyderOCZ or AndyOCZ can help you ;)

[Warboy]

Thread should be moved to General Memory or OCZ Support section...

I don't have the necessary information ( chips used ) to estimate anything for you.
But I'm sure RyderOCZ or AndyOCZ can help you ;)

Oh Alright, Err....I didn't know there was a OCZ forum.

[BenchZowner]

end user forum @ XS.org (http://www.xtremesystems.org/forums/forumdisplay.php?f=138)

There's also the official OCZ forum ,here (http://www.ocztechnologyforum.com/forum/index.php)

[Warboy]

Ah, Ok if a mod can bump my thread over there, that would be great.

[uwackme]

I have the 1066SLI version, but both use D9 chips I believe.

Nice ram, though I had a weirdness today where the system locked up and would hang on the memytest in the bios.

I got alot hotter here today, so maybe it was that. I have them turned down at the moment to 230Mhz from 270.

[Warboy]

Well I'm going to be using a nForce 590 SLi motherboard and this memory and a 8800GTX with a AMD X2 6000+ so i'm thinking of how well it would perform.

[BenchZowner]

I have the 1066SLI version, but both use D9 chips I believe.

Nice ram, though I had a weirdness today where the system locked up and would hang on the memytest in the bios.

I got alot hotter here today, so maybe it was that. I have them turned down at the moment to 230Mhz from 270.

You're really wacking me out while trying to understand what you've just said :D

The 6400 kit ain't D9 most likely ( leaving the door open for Ryder :p: ).

And also...what do you mean by saying that you turned your 1066 SLI Edition from 270 (?) MHz (?) to 230 (?) :rolleyes: 230 MHz real operating frequency...DDR-460...erm... :rolleyes:

[Warboy]

You're really wacking me out while trying to understand what you've just said :D

The 6400 kit ain't D9 most likely ( leaving the door open for Ryder :p: ).

And also...what do you mean by saying that you turned your 1066 SLI Edition from 270 (?) MHz (?) to 230 (?) :rolleyes: 230 MHz real operating frequency...DDR-460...erm... :rolleyes:
lol, you know....I was thinking the same thing.

[Jupiler]

Topic moved to the OCZ support section.
I left a redirect from the original section (Xtreme bandwith), just in case you're wondering where your topic went.
The redirect (in the Xtreme bandwith section) expires in 2 days, which means it will no longer be visible there.

[Warboy]

Topic moved to the OCZ support section.
I left a redirect from the original section (Xtreme bandwith), just in case you're wondering where your topic went.
The redirect (in the Xtreme bandwith section) expires in 2 days, which means it will no longer be visible there.
Thanks Jupiler.

[andyOCZ]

Hi, as far as speeds go, this is not Micron D9 based, so your overclocking may vary. I have seen some kits hit over 1000mhz and some kits do less than that. Your results may vary. It's good RAM, but you will have to work at overclocking it to see what you get.

[uwackme]

Sorry, I confused even myself.

I bought these:

http://www.newegg.com/Product/Product.aspx?Item=N82E16820227181

Which I assume is D9GMH based.

They started life at 270Mhz (aka 540 aka 1080) the physical clock is 270Mhz quad sampled for a access data rate of 1080Mhz, but that is only on the actual data transfers, all other activities are at 270Mhz. If you stick a scope on the signals you'll see a clock of 3.XXns period.

Anyway, they atarted out at 270 5.0,5,5,15 @ 2.1V but after a while they drifted down and now only run 230Mhz at the same timings/voltage. I haven't bothered to push the voltage past 2.2V (which yeilds 2.17V on my board on a Fluke 85) as I read all the horror stories about D9's failing.

As far as I know the PC2 8500 stuff is D9 micron chips.

I suppose I need to pull the sticks out one at a time and see if ONE of them is performing poorly and holding back the other.

But it does run at default fine... being 200Mhz (800) 5,5,5,15 @ 1.9V that the system sets up to if I clear CMOS and load defaults.

So it doesn't seem to be related to the D9 death syndrome where 1.8 or 1.9V they wont run default on any longer. These run default fine.

I really like the idea of EPP and SLI ready, to get ALL the subtimings loaded under manufacturer control, rather than just the basics.

But as Ive said elsewhere, the data available to help AM2 based applications is very limited. Almost everyone is geared to C2D applications.

Maybe Andy has some advice... timings, subtimings, drive strengths, etc.

Im on a 590SLI Foxconn, nice board but seems to be missing in the bios some of the items the M2N32-SLI boards have. I did ask TicTac to look at the bios, hopefully he might be able to uncover some extra entries.

I wanted a second set to be ready for Vista/Crysis with 4GB but the odd results Im getting has me apprehensive.

[andyOCZ]

Hi, your memory is Micron D9 based. I would test each stick on it's own and see if one is degrading.

I wish I had your board to test on. The 590 based boards were fairly short lived in the enthusiast market and we never recieved a Foxconn board.

Let me know what you find with your 2 sticks.

[Warboy]

Hi, your memory is Micron D9 based. I would test each stick on it's own and see if one is degrading.

I wish I had your board to test on. The 590 based boards were fairly short lived in the enthusiast market and we never recieved a Foxconn board.

Let me know what you find with your 2 sticks.

Andy, I'm hitting a barrier it seems. I can't get it to hit pass 1000Mhz on a P35 motherboard. But I got it to hit 1100Mhz on a Nvidia 570i Motherboard. Whats up with that?

[uwackme]

Andy, both sticks on thier own, one at a time are behaving excellently and nearly identical.

All at 2.25V, weak driving strength, 1.25, 1.25, 1.25, 1.25, 1.0, 1.0

250Mhz (500) 4.0, 4, 4, 12, 18

280Mhz (560) 5.0, 5, 5, 15, 22

Orthos stable, etc.


Wondering if some kind of skew is needed for both sticks together, and this bios just doesn't seem to have it.

Anyone know what "LPC P2P P2P" is?

Also "Read DQS Skew" ranging from -92/92 to 0 to +92/92 but I have no idea what that means: and "Read delay from Rx FIFO" that gives 0-4ns range for a setting.

I know the ASUS M2N32-SLI has "skew" settings that make sense... one for chanA and one for chanB. But I have no idea how the Foxconn entries correspond.

Im hoping there is some setting to make this work correctly with both stick in.

There are 4 slots, should I be using the closest to CPU slot (1) and then slot (3), or as I have been using, slot (2) and slot (4) farthest from the cpu. Reason being to give some space between the CPU heatsink and the DIMM.

Given that the memory controller is in the A64, and the settings are therefore ALL UNIVERSAL, why are there so many variations in BIOS settings and nomenclature? cough.

[RyderOCZ]

Uwackme,

What divider are you running? and what CPU multi?

[uwackme]

It's all 1:1 aka DDR800 in the bios. I spent a couple hours on each stick Orthos'ing "blend" at 270x12... multi of 12, but the other testing was done at 12 for the 250Mhz (3.0Ghz) tests, and 10 for the 280Mhz (2.8Ghz).

Since the CPU works fine at 250Mhz x 14, I dont think the CPU speed is holding anything back. I didn't want to use max CPU speed to avoid any instability in that creeping into the memory diagnosis.

I haven't bothered to do any testing at any divider than 1:1 on the AM2 setup. My NF4 system used 305Mhz and DDR333Mhz divider to run CPU at 2.7+Ghz with x9 multi and 4x512M OCZ GoldVX (BH5's) at 250Mhz.

[RyderOCZ]

Ok... 1:1 is not DDR2-800 in the bios. 1:1 is DDR400 in the bios, but that is beside the point.

With a 12 multi the DDR2-800 divider gives you a ram divider of 6. So at 270 x 12 your ram speed is 540 (DDR2-1080) which is 1:2, 1:1 would be HTT set to 270, Ram speed = 270 or DDR2-540.

Not a big deal, you had the right base speed and DDR2 speed, but you threw me off with your description.

So with 2 sticks you can't get up to what DDR2-1000?

2 posts up you are talking about P35, now you are back talking about AM2. Which board do you want help with and which kit of ram is this?

[uwackme]

I dont have a P35... not my post.

I have a AM2 board, the Foxconn version of the NForce590SLI... similar to the ASUS M2N32-SLI.

The two sticks just dont cut it above 230Mhz (460Mhz DDR) (920Mhz DDR2)

I call it 230Mhz because that is what it is. The entire stick is clocked off a 230Mhz clock. The data burst is quad sampled, rising edge/falling edge off the clock and a clock', 90degree's out of phase. If you slap a scope on the ram its all 230Mhz based but the DQ pins have a haze of 920Mhz data during the actual data transfer. Im an engineer, Ill stick with the real engineering terms, not the joe public labeling.

So the individual sticks do 280Mhz 5,5,5,15 or 250Mhz 4,4,4,12 flawlessly completely Orthos/Windows/3Dgaming stable.

Put the two together and its 230Mhz max. Worse, the two sticks together require "normal" 1.5, 1.5, 1.5, 1.5, 1.0, 1.0 driving strengths. While the individual sticks require only "weak" 1.25, 1.25, 1.25, 1.25, 1.0, 1.0; two sticks in and the "weak" option doesn't cut it all the way down to 200Mhz.

By 1:1 I mean the CPU HTT and the ram speed are the same. 230Mhz on the CPU and 230Mhz (460 DDR or 920 DDR2 joe public nomenclature) and so CPUZ shows 230Mhz x14 on the front page, and 460Mhz 5,5,5,15 on the memory page.

I know the memory is good stuff and performs well, but seems to need "something" in the way of settings to get running on this board with both sticks installed.

I also tried both DIMM1 DIMM3 (equivalent of DFI ORANGE sockets) and DIMM2 DIMM4. Neither helps, and DIMM1 is very close to the CPU heatsink, making me concerned about heating the ram with the CPU air, and blocking CPU cooling by interfering with the air flow.

I have a 120mm fan right over the ram blowing directly on them for safety.

[uwackme]

Got ahold of a set of GSkill- HZ sticks, using the same D9GMH chips. It yeilds the exact same results.

So it must be the motherboard. Either bios settings that are not user alterable at some annoying default, or maybe Foxconn's implementation of the 590SLI design just isn't up to snuff.

Damn shame, the 5600+ chip I landed is fantastic, guess I need to find a better motherboard.

[andyOCZ]

The 590 boards just don't clock like the 680 boards do.

[uwackme]

Quintero, who has a ASUS Crosshair 590SLI board pointed out a couple timings that are NOT in the bios of the Foxconn:

Trdrd and Twrwr, both of which end up being critical. And the Foxconn reference bios defaults these settings to too tight a number.

By going into Windows at 250Mhz, and using clockgen and systool to alter them, I get higher results.

Quitero is getting 597Mhz on the same D9GMH chips on the Crosshair board. In fact he's doing it with 2.2V and 4 1G sticks!!! Guess the ASUS might be my only resort.

Wondering if the EPP SPD can be used to force a different value on those timings? Or are oem's not using the EPP feature to the extent they could.

[andyOCZ]

You can try the EPP feature if your board supports it. That might help depending on your setup.

[Warboy]

Andy, I'm hitting a barrier it seems. I can't get it to hit pass 1000Mhz on a P35 motherboard. But I got it to hit 1100Mhz on a Nvidia 570i Motherboard. Whats up with that?

Nobody has explained that to me yet....

[RyderOCZ]

Different boards clock ram differently, also different IC's clock differently on different boards.

You cannot expect all ram to reach the same speed across all chipsets/boards.

Even 2 boards with the same chipset may not clock ram the same.

[uwackme]

After implementing some of Quitero's advise, I was able to reach 260Mhz 5.0, 5, 5, 15, CPU at 12 x 260.

Im now testing 250Mhz x 14.

But Im sure I cant get the max potential out of the rams until I go to the Crosshair. Just too many parameters of the AM2 memory controller that are left to some unknown default in bios's in other boards.

I also have my doubts about hte Riktek 9715 Vdimm/Vtt voltage regulator. Having seem what it was doing on the DFI NF4SLI-DR, I really dont like any board that uses it. I should have done more homework.

Meantime, for anyone not trying to achieve the absolute MAX out of thier system, looking for a cost effective stable solid board, this Foxconn is actully excellent. Other than the limited settings in the bios Im very impressed with it.

The 1066SLI rams as well, are very nice. I'll continue my quest to maximize them.

[andyOCZ]

uwackme,

I'm glad things are better. I guess you have found the reason that we don't see many of these boards!

Thanks for the info.

[uwackme]

I switched the OCZ 1066SLI rams back in with what I've learned. It's running 270Mhz dual channel just fine now.

Im sure with Crosshair I'll be able to get to the magic 290Mhz point... for 290x12 on the CPU 1:1.

[iadstudio]

What about the pc2 6400 version of those?

http://www.newegg.com/Product/Product.aspx?Item=N82E16820227198

I just got a set of these. I had some Corsair pc2 8500 c5 and they're in RMA. I've since found that it's most likely not the D9's that failed, that the silicon used in the pcb can't take over 2.4v for extended periods.

EDIT: Got my answer. I read through the post again and ther it was. Either way, I've only had the one set for 10 hours and I had to order a second kit. Nice RAM and a great price right now. ($95 on newegg after rebate)

[andyOCZ]

What about the pc2 6400 version of those?

http://www.newegg.com/Product/Product.aspx?Item=N82E16820227198

I just got a set of these. I had some Corsair pc2 8500 c5 and they're in RMA. I've since found that it's most likely not the D9's that failed, that the silicon used in the pcb can't take over 2.4v for extended periods.

EDIT: Got my answer. I read through the post again and ther it was. Either way, I've only had the one set for 10 hours and I had to order a second kit. Nice RAM and a great price right now. ($95 on newegg after rebate)

That should work out real well for you. Thanks