What 1.8V DDR2 RAM for Intel P965 board??

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yacoub

Golden Member
May 24, 2005
1,991
14
81
Originally posted by: jimmyj68
Does it seem likely that if you install DDR@ 800 sticks rated at 1.9 v the Intel board won't function? Or is it that the memory won't operate at 800 with only 1.8v applied. We're talking a hundreth of a volt here.

I've all ready bought the farm because I bought patriot 2 gig kit 800 but the sticks operate at 2.1 volts. I would not be surprised if they don't work in my Intel P965 board. I haven't instaled anything yet in wait of my E6600. I await the reports of those who try the memory experiments.

I never imagined that you could have a board that works with only one memory voltage spec. In the past I just looked for the right speed and DDR or DDR2.
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FWIW, I'm holding off on the purchase until the revised stepping p965 motherboards come out in a month or so. Supposedly they improve the FSM or whatever it's called.

reference: http://forums.anandtech.com/messageview...atid=29&threadid=1899717&enterthread=y
 
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CrappyLuckMan

Member
Apr 3, 2005
57
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Maybe a stupid question but, if your motherboard has jumpers to set the ram voltage at or a little higher than rated ram voltage the board would post, but if your board is jumperless (most boards now) you would not post if mobo defualts at the lowest voltage?
Can you borrow some 667 low voltage ram from a repair tech store and increase the voltage in the bios, save it, and reboot with new ram?
I can't believe any board right now would only support 1.8v ram and have no voltage adjustments, if the P965 is like that then it sux.
 
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crimson117

Platinum Member
Aug 25, 2001
2,094
0
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Originally posted by: CrappyLuckMan
Can you borrow some 667 low voltage ram from a repair tech store and increase the voltage in the bios, save it, and reboot with new ram?
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Yes, I believe so. However I'm not willing to worry about that workaround. I want ram that just works right.
 
Zap

Zap

Elite Member
Oct 13, 1999
22,377
7
81
Speaking of workaround... I got the gigaram stuff from Newegg a day early so I test it out... my Biostar Tforce6100 AM2 will not autodetect the RAM properly - ever. What it doesn't detect is the latencies. If I use my PQI RAM (which won't autodetect with two sticks inserted but will with one) and manually set the latencies for 4-4-4-12, then the gigaram seems to work fine at 667MHz using 1.85v (lowest board will give). Setting latencies to AUTO results in no POST no matter what (even setting RAM to 400MHz and 2.00v).
 
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gobucks

Golden Member
Oct 22, 2004
1,166
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i think the problem with a lot of these boards is that with their default settings, they try to boot at 1.8V which is not enough for the memory to run at DDR2-800 speeds, but since the memory defaults to 800MHz, they won't boot. apparently all you have to do is put some cheap memory (i think i'm gonna go buy like a 256MB stick of ddr2-533 for like $15 for this purpose) in there so that it boots, then go into the bios and relax the memory timings and up the voltage, then turn it off and put in your good memory. I'm sure this is just a bios problem that will be fixed soon.
 
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rklaver

Member
May 17, 2006
70
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Yeah but the question is does the Intel board have such a feature in it's bios? This is a classic series board so I'm guessing it won't be feature rich.
 
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crimson117

Platinum Member
Aug 25, 2001
2,094
0
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Originally posted by: rklaver
Yeah but the question is does the Intel board have such a feature in it's bios? This is a classic series board so I'm guessing it won't be feature rich.
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So only high end boards can... boot with... ram? There's nothing non-standard about the ram, and the boards claim they support DDR2 800, and the memory has passed DDR2 800 certification (or whatever).
 
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yacoub

Golden Member
May 24, 2005
1,991
14
81
That A-Data Gary mentioned seems to have some negative reviews at NewEgg about recieving at least one dead DIMM.
 
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River Side

Senior member
Jul 11, 2006
234
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what doesn't get negative reviews at the egg? I wouldn't put stock in most of those reviews.. seriously
 
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crimson117

Platinum Member
Aug 25, 2001
2,094
0
76
RAM arrives DOA once in a while, so you RMA it and get a new set. I'm gonna trust Gary's recommendation over the newegg customer review :)
 
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rklaver

Member
May 17, 2006
70
0
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I bought the A-Data RAM from Newegg that Gary mentioned as well. Works great on the DP965 board without any problems.
 
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Vagrant

Member
Oct 2, 2000
157
0
0
Dasmokedog,
Thats a nice quick rig you have.
How much noise do you get off the zalman cooler setup?
 
Zap

Zap

Elite Member
Oct 13, 1999
22,377
7
81
Originally posted by: jimmyj68
I never imagined that you could have a board that works with only one memory voltage spec.
Click to expand...

Originally posted by: crimson117
There's nothing non-standard about the ram, and the boards claim they support DDR2 800, and the memory has passed DDR2 800 certification (or whatever).
Click to expand...

That's the whole issue. "Spec" for DDR2, what is that? IIRC it is 1.8v. It isn't the board that doesn't run at various specifications - they run at THE specification. It is memory module manufacturers pandering to the whole "gamers and overclockers are willing to pay more" craze.

Is there even a "certification" for DDR2-800? I know JEDEC has stated that there will be DDR2-800 and eventually even 1066, but are those even a part of the specification yet? Also, at what voltage and latencies? I tried to find out right now but the JEDEC site needs a login. Doing a quick search (was gonna say Google, but don't want to be sued by them :p ) the only info I can find about the actual JEDEC standards are:

DDR2-400 CAS 3 1.8v
DDR2-533 CAS 4 1.8v
DDR2-667 CAS 5 1.8v

Any differing speeds, latencies or voltages are not "standard" at this time, AFAIK, unless someone can pull up some documents stating otherwise.
 
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DaveLessnau

Member
Mar 12, 2006
25
0
0
Originally posted by: yacoub

Thanks, yes I'm only interested in stability and reliability with known-compatible components. I am not going to overclock or mess with RAM timings/voltage. Just want to plug and play, so to speak. ;)

Intel board, Intel chip, some RAM that works right with both. DDR2-533 or higher, though I've been told that the P965 boards will run at 533 unless you start tweaking stuff which I won't be. At least that means the RAM can be cheaper for me since I can make due with 533, right?
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Along with what RAM physically works in these boards, that brings up another question. For standard, plug-it-in-and-go operation, what speed RAM should go in these board? The front-side bus on the P965 is 1066 MHz (quad pumped). Divide by 4 to get the actual frequency and that's 266 MHz. To match that speed to the RAM, multiply that 266 by 2 (for double data rate memory) and you get 533 MHz. So, does that mean there's no point in getting any memory beyond DDR2-533 (assuming no overclocking)? Would we be best served by getting the lowest CAS 1.8v DDR2-533 we can afford/find?
 
Zap

Zap

Elite Member
Oct 13, 1999
22,377
7
81
Low post count eh, DaveLessnau? ;)

You are partly correct, but don't take into account some overhead such as from graphics texturing and such. What "should" go in are the standards:

DDR2-400 CAS 3 1.8v
DDR2-533 CAS 4 1.8v
DDR2-667 CAS 5 1.8v

Just choose 533 or 667 and you should be good for no overclocking.
 
cmdrdredd

cmdrdredd

Lifer
Dec 12, 2001
27,052
357
126
Originally posted by: DaveLessnau
Originally posted by: yacoub

Thanks, yes I'm only interested in stability and reliability with known-compatible components. I am not going to overclock or mess with RAM timings/voltage. Just want to plug and play, so to speak. ;)

Intel board, Intel chip, some RAM that works right with both. DDR2-533 or higher, though I've been told that the P965 boards will run at 533 unless you start tweaking stuff which I won't be. At least that means the RAM can be cheaper for me since I can make due with 533, right?
Click to expand...

Along with what RAM physically works in these boards, that brings up another question. For standard, plug-it-in-and-go operation, what speed RAM should go in these board? The front-side bus on the P965 is 1066 MHz (quad pumped). Divide by 4 to get the actual frequency and that's 266 MHz. To match that speed to the RAM, multiply that 266 by 2 (for double data rate memory) and you get 533 MHz. So, does that mean there's no point in getting any memory beyond DDR2-533 (assuming no overclocking)? Would we be best served by getting the lowest CAS 1.8v DDR2-533 we can afford/find?
Click to expand...


You can simply tell the board to run your memory at DDR2-800 speed.

BTW: every stick of corsair memory runs in every motherboard I've used (DQ6, DS3, P5B/Deluxe, P5W-DH, Intel 975XBX) without any adjustments if you're not overclocking. It will bootfine out of the box. Now when you change stuff around you should change from "auto" voltage and timings.
 
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brainwave

Member
Apr 28, 2003
87
0
0
I have an Intel DG965 mb and 2 gigs of Corsair XMS2-6400 DDR2-800. The machine booted and ran fine. I do have concerns that the Intel website specifies 1.8v RAM. The Corsair site says the modules "are tested" at 1.9v. That does not necessarily mean they won't work at 1.8v. By testing at 1.9v Corsair may be giving itself the best chance for compatibility. But XMS modules are high quality and may simply do fine at 1.8v if they are not oc'd. Also, I read on another forum that new Intel BIOS has fixed this problem on Intel boards, but I don't know this for sure.
 
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Raider1284

Senior member
Aug 17, 2006
809
0
0
Originally posted by: Devilishy
why not get this?

http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=85002-54

1.8V, Cas 5. I just ordered this today for my P5B-VM. If someone cares about results, PM me and I will reply back in a week once my system is setup by thursday.
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That's a killer deal if it ends up working. Usually you pay ALOT more to get DDR2800 ram thats runs at the low 1.8V. Almost all DDR2800 ram I have seen requires 2.1+

 
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Hikari

Senior member
Jan 8, 2002
530
0
0
I rather doubt it is 1.8v, I imagine they mean it will boot at 1.8v...they aren't known for low-voltage memory. For example, I have some Geil rated for 2.2v, but it still runs at 1.8v - just not in dual channel. Lots of misleading advertising out there.

http://www.microdirect.co.uk/ProductInfo.aspx?ProductID=14773&GroupID=0 says 1.8-2.4v. Of course, I can't find any reviews of the memory to see the real deal on it.

http://64.233.167.104/search?q=cache:Gm...GX22GB6400DC&hl=en&gl=us&ct=clnk&cd=57
 
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Devilishy

Member
Sep 22, 2006
37
0
0
oh crap. I never thought of that!

If you have GEIL memory, can you please chime in here to confirm?
 
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hans007

Lifer
Feb 1, 2000
20,212
18
81
almost all value ram is 1.8v .


ddr2-667 cl5 probably. 1.8v is jedec standard and all dimms are supposed to support this to be complaint. those ocz ones are just screwed up and frankly ocz is a half ass company as it is.


that said, you coudl buy any micron , samsung, spectek, hynix, nanya oem stuff and it should work fine.
 
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