My Twin2X PC6400 (5-5-5-12) are 'suppose' to be Micron D9CRZ BT-37E.
No way to tell for sure unless I take off the HS and I'm not about to do that.
Originally posted by: adder1971
man, micron d9 at a reasonable price is getting harder to find than big foot. (i've heard of it but have never seen it)
linky to a decent list
memory list
Originally posted by: Nevets Drassel
Originally posted by: adder1971
man, micron d9 at a reasonable price is getting harder to find than big foot. (i've heard of it but have never seen it)
linky to a decent list
memory list
My Twin2X PC6400 (5-5-5-12) are 'suppose' to be Micron D9CRZ BT-37E.
No way to tell for sure unless I take off the HS and I'm not about to do that.
Originally posted by: Core2
Originally posted by: aintitthelife98
Looks like my patriot ram has the good stuff in it:
Micron D9GMH (B6-3)
Maybe I should look at you. What are the model numbers
Sorry, to much hit or miss with those. You probably have the good chips
PC6400LL 4.0-4-4-12 @ 2.1~2.2V
PDC21G6400+LLK / PDC22G6400+LLK
Elpida ?
Micron D9GMH (B6-3)
Micron D9DQW (BT-37E)
Micron D9DQT (BT-3)
Originally posted by: adder1971
Originally posted by: Nevets Drassel
Originally posted by: adder1971
man, micron d9 at a reasonable price is getting harder to find than big foot. (i've heard of it but have never seen it)
linky to a decent list
memory list
My Twin2X PC6400 (5-5-5-12) are 'suppose' to be Micron D9CRZ BT-37E.
No way to tell for sure unless I take off the HS and I'm not about to do that.
i took mine off and then pressed em back on. still tacky so they are on good as new.
Originally posted by: Nevets Drassel
Originally posted by: adder1971
Originally posted by: Nevets Drassel
Originally posted by: adder1971
man, micron d9 at a reasonable price is getting harder to find than big foot. (i've heard of it but have never seen it)
linky to a decent list
memory list
My Twin2X PC6400 (5-5-5-12) are 'suppose' to be Micron D9CRZ BT-37E.
No way to tell for sure unless I take off the HS and I'm not about to do that.
i took mine off and then pressed em back on. still tacky so they are on good as new.
Well I gave it a shot and the only thing that I can see on the chips are the letters DBKD whatever that means.
Originally posted by: Tuvoc
I've decided on a mild overclock on my system, I don't really want to spend days trying to get the last drop out if it, and for 24/7 operation all 4 cores at full load, I need to play it a little safe, especially since I'm on air not water.
Good news since last post is I managed to get the memory at 711 using the 2:3 divider. 800 would work with 2 DIMMS but with 4 DIMMS was a no-boot. Also I ran 4 instances of Prime95 for 12 hrs with no errors.
Final setting
- CPU and northbridge at default volts
- CPU 266 x 11 = 2933 (nice to have an unlocked multiplier upwards)
- memory at 2.0875v
- 266 FSB
- 2:3 memory ratio
The machine is very rapid as you'd expect. VISTA arrives tomorrow so a fresh install, then it will be fully operational
Voltage droop is huge on the quad core with this board. I've never seen anything like it. At idle ASUS Probe shows 1.28 - 1.30v - which is itself curious becuase the chip default is 1.35v I thought. At full load with 4 x Prime95, it drops to 1.20v mostly, but towards the end of the large FFT's at about 256k size and below, it gets to 1.18v. Staggering, but there are no Prime errors the so the chip is obviously happy enough. I may yet set the volts manually in the BIOS to compensate a little. I see a post from someone with a DS3 who also gets 0.1v voltage droop with a quad, so the quads clearly do stress motherboards quite hard.
I've had the board less than a week, so I have no idea yet about long-term reliability, but there is no reason for that to be an issue
EDIT: I also flashed to the 307 BIOS, which required a CMOS reset afterwards but otherwise smooth. No ill-effects, and no gains either from what I can see.
Originally posted by: adder1971
vdroop on this is crazy, my dual reacts the same as your quad. a full .110 below set spec under load.
Originally posted by: aintitthelife98
Originally posted by: adder1971
Originally posted by: aintitthelife98
So noticed a strange quirk in 0401. I went to try 8x387.5 to get to 3.1ghz. So I set the FSB to 1550 and the memory unlinked to 800 and it wouldn't let me set 800. It would only do 775 no matter what even though it was unlinked from the FSB.
Can anyone else try this and verify if it is an 0401 issue or just a weird thing on my system?
it's isn't just an 0401 issue. only certain fsb's seem to be able to give you an even 800mhz mem speed. not sure what the problem is. have to figure it is some sort of fsb/mem ratio issue.
well thats annoying I said screw it and just jumped to 3200 to see if I could make that do what it do!
Originally posted by: Tuvoc
Originally posted by: adder1971
vdroop on this is crazy, my dual reacts the same as your quad. a full .110 below set spec under load.
Interesting ! I didn't think the Core 2s had that much of a droop
The drop on the quad can get to as much as .13 I think. It depends on exactly what the CPU is doing. In parts of Prime 95 with different FFT sizes it can vary
Originally posted by: mordrid52
The "Unlinked" setting doesn't actually unlink the FSB and memory bus. It still uses dividers just like Linked mode. It just automatically chooses the divider that is closest to what you entered. In your case, it was using a 1:1 divider since that is the closest it could come to having a 387.5 MHz FSB and a 400 MHz memory bus. If you keep increasing your memory bus, it will stay at 775 Mhz (387.5x2) until you reach 827 MHz, when it will jump to the next memory divider (15:16).
You can use CPUZ to see what your current memory divider is. It is the "FSB : DRAM" numbers on the memory tab.
Originally posted by: Tuvoc
About the vdroop on this board:
Just got my latest issue of the CustomPC magazine, they did a "first look" on this board. They had the following to say:
".... despite having a 120mm fan over them, the VRMs were overheating which cuased the core voltage to drop by 0.12v (a phenomenon known as vdroop)"
So, people talk about cooling the northbridge and southbridge, but it appears that the VRMs are just as much in need of attention. Where are they anyway on the board ?
Originally posted by: chizow
Well, I'm probably not the best candidate for pushing this memory to the limit. There was a time I was willing to reset my CMOS for hours and hours and have a wind tunnel in my room with 30 case fans, but not anymore.
I doubt I'll end up with anything close to 500MHz. From some of the reviews and feedback from this thread, that'd require more NB/SB cooling and I'm just not gonna bother paying more to push the FSB. Also, some of the reviews that did go the extra distance seemed to indicate 450MHz seemed to be the limit with this board to run stably.
I'll try and tweak it a bit in the next few days but probably won't have time tomorrow. 2407wfp arriving and I'll be busy setting that up and tweaking it. Also, I didn't buy the PC-8000 for this rig only, I ended up spending a little more on RAM and a little less on the CPU with future scalability/upgradability in mind, so if I can hit 3.2 to 3.5GHz with a FSB @ 400 MHz I'll be more than content.
Originally posted by: Genuine Imitation
Originally posted by: Tuvoc
About the vdroop on this board:
Just got my latest issue of the CustomPC magazine, they did a "first look" on this board. They had the following to say:
".... despite having a 120mm fan over them, the VRMs were overheating which cuased the core voltage to drop by 0.12v (a phenomenon known as vdroop)"
So, people talk about cooling the northbridge and southbridge, but it appears that the VRMs are just as much in need of attention. Where are they anyway on the board ?
Where exactly are these VRM's located and what do they look like? If they're the little black squares that are sitting around cpu then I don't htink they're overheating. Mine are cool to the touch even when my 6600 is fully loaded. Course my vdroop is only about .05 and not .12, maybe they do overheat on some boards.
Originally posted by: Core2
Originally posted by: Genuine Imitation
Originally posted by: Tuvoc
About the vdroop on this board:
Just got my latest issue of the CustomPC magazine, they did a "first look" on this board. They had the following to say:
".... despite having a 120mm fan over them, the VRMs were overheating which cuased the core voltage to drop by 0.12v (a phenomenon known as vdroop)"
So, people talk about cooling the northbridge and southbridge, but it appears that the VRMs are just as much in need of attention. Where are they anyway on the board ?
Where exactly are these VRM's located and what do they look like? If they're the little black squares that are sitting around cpu then I don't htink they're overheating. Mine are cool to the touch even when my 6600 is fully loaded. Course my vdroop is only about .05 and not .12, maybe they do overheat on some boards.
They should be the ones that look like tires with copper wrapped around them. Somebody correct me if I'm wrong. Scroll down through the link and see if you can locate them
Voltage Regulator Modules
Nope. Those aren't VRM's exclusively. Those are filters that are part of the VRM. They smooth out the signal by removing EMI and AIDS. Yes, electronics AIDS.Originally posted by: Core2
[the VRM's] should be the ones that look like tires with copper wrapped around them.
Originally posted by: dlxmax
Nope. Those aren't VRM's exclusively. Those are filters that are part of the VRM. They smooth out the signal by removing EMI and AIDS. Yes, electronics AIDS.Originally posted by: Core2
[the VRM's] should be the ones that look like tires with copper wrapped around them.
The voltage regulation module is a chip, capacitors, mosfets, and filters. I'm no expert, but the VRM chip may be the small chip to the upper left of the battery. Anyway, hot filters won't mean a heap of beans in a system--unless they melt (don't worry, that'd be so hot that your mobo would probably melt first)
Anyway, did a little ORTHOSing tonight while I was out. It's the first time I've actually not had it crash within a couple of hours. So, after SEVEN hours of non-stop ORTHOS I've learned that I'm stable at 350 FSB, which translates into a 3.15ghz CPU (x9) and memory at 1050mhz (5-5-5-15 2T to be safe).
Guess I'm one of the few to have stable memory up over 1000mhz DDR2. I'd say the key is a low FSB and a high multipler because nothing else seemed to work--let alone boot. Oh, and DAMN is my memory HOT!
Originally posted by: Core2
Originally posted by: chizow
Well, I'm probably not the best candidate for pushing this memory to the limit. There was a time I was willing to reset my CMOS for hours and hours and have a wind tunnel in my room with 30 case fans, but not anymore.
I doubt I'll end up with anything close to 500MHz. From some of the reviews and feedback from this thread, that'd require more NB/SB cooling and I'm just not gonna bother paying more to push the FSB. Also, some of the reviews that did go the extra distance seemed to indicate 450MHz seemed to be the limit with this board to run stably.
I'll try and tweak it a bit in the next few days but probably won't have time tomorrow. 2407wfp arriving and I'll be busy setting that up and tweaking it. Also, I didn't buy the PC-8000 for this rig only, I ended up spending a little more on RAM and a little less on the CPU with future scalability/upgradability in mind, so if I can hit 3.2 to 3.5GHz with a FSB @ 400 MHz I'll be more than content.
You don't have to increase the FSB much to test the memory speed. What I did is set it to Linked, Memory Ratio to 5/4 and set the FSB to around 1100 and the bios will adjust the mem speed for you and kept upping the FSB by 25 till you hit your memories spec speed. You will get a slight FSB overclock.