Mushkin XP2-6400 (996580) 4x2 GB testing

[n7]

I previously had a 4x2 GB mix of 4 GB of this Mushkin & the 4 GB G.Skill DDR2-800 5-5-5 PQ kit.
The G.Skill didn't clock nearly as well though, so it got relegated to use in my HTPC & i bought a second kit of the Mushkin.

My P5B Deluxe finally got retired into use in my HTPC as well; it had a good run, but it was showing its age & wasn't quite doing what i wanted it to.

So now i have a DFI UT P35-T2R + Q6700 + 4x2 GB Mushkin in the main rig.
Still learning the ropes on this DFI, so results could be better, voltages lower, & timings tighter, etc.
But for now i'm just getting the hang of tweaking things with it.

I will say this DFI is far better already for working with OCing, though it requires a lot more fine tuning.

Overnight i ran:
8 GB DDR2-1050 5-5-5-15 (7 hours P95 custom) stable

Now i tightened up perf. level to reasonable levels & am trying for something i can run for 24/7 use i hope.
TRFC is deliberately very loose; will work on that later.
8 GB DDR2-1080 5-5-5-15 in testing

NB & PWM get absolutely scorching, as can be seen in the first screenie, so i'm using the house fan to help a little for now , & will likely pick up the side panel for my case that has the 250mm fan on it; hopefully will help a bit.

So far i can't seem to use the 1333 MHz strap with this RAM; it seems to prefer the 1066 MHz strap, as it won't even boot at the speeds i can do with the 1066 MHz one, which seems kinda backwards to me.

But it's a fun learning process, & damn, this mobo's voltage & settings control blows away my old P5B-D.

 

[GarfieldtheCat]

Nice...I've got a similar setup, except I have the LT (no heatpipe) P35-T2R with a Q6600 and 4x2 Patriot RAM. I also have a TRUE with a 1600rpm Scythe on it, undervolted to about ~9V

Right now, I run 3.5GHz (389x9), prime stable for 12 hours @ 1.392V with load temps ~60-62 (by coretemp, the range is due to ambient temp change)

Haven't decided if I want to bother trying for 3.6, I don't like real high temps.

I did take off the NB heatsink and put AS5 on it, and have a side panel with a 250mm fan on it, and my NB temps only hit 45C under load. PWM will get a bit higher, into the low 50's. That's after long prime runs.

For 1-2hour gaming, my NB and PWM both only hit about 44-45C

 

[n7]

What's your RAM running at? How high can you get it?

I'm getting pretty pissed off actually. :frown:

Been testing this all day long, & i'm starting to see the exact sorta weaknesses with this mobo i saw with my P5B-D, which really annoys me.
Cannot run 9x389 4:5 instead of 10x350 2:3, since as soon as i try that, it errors out in HCI or P95 instantly.

I assume it needs a bit more NB voltage, but that didn't seem to help.

I don't understand what is so impossible about 4:5 on both of these mobos...seriously, wtf is it basically impossible for them?

And while i can run P95 (custom set, so it actually uses all 8 GB) for hours with really high speeds on the RAM, i then run HCI Memtest, & it's not even passing @ DDR2-975!?

Frickin' annoying as hell.

I'm starting to realize there is really no such thing as decent clocking with 4 dimms
I knew this already, but i figured surely if i got a really good mobo, it'd at least be decent.

But no

 

[Dadofamunky]

Hmmm... it used to be having only 2 DIMMS could cause problems. Now, it's easy to blow out your system with 8 GB. Unfortunately, it looks like extreme clocking still isn't possible with 4 hispeed DIMMs. I wonder if this is just inherent with Intel's external memory controller. I'm curious to know how things will go when Intel comes out with their first IMC in Nehalem. I'm ALSO curious to know what the AMD side of things would look like (if we ever got decent PROCESSORS to play around with, mind you).

Looks like you might be stuck with the 10 multi.

Hey, have you tried the 8 multi?

 

[GarfieldtheCat]

Originally posted by: n7
What's your RAM running at? How high can you get it?

I'm getting pretty pissed off actually. :frown:

Been testing this all day long, & i'm starting to see the exact sorta weaknesses with this mobo i saw with my P5B-D, which really annoys me.
Cannot run 9x389 4:5 instead of 10x350 2:3, since as soon as i try that, it errors out in HCI or P95 instantly.

I assume it needs a bit more NB voltage, but that didn't seem to help.

I don't understand what is so impossible about 4:5 on both of these mobos...seriously, wtf is it basically impossible for them?

And while i can run P95 (custom set, so it actually uses all 8 GB) for hours with really high speeds on the RAM, i then run HCI Memtest, & it's not even passing @ DDR2-975!?

Frickin' annoying as hell.

I'm starting to realize there is really no such thing as decent clocking with 4 dimms
I knew this already, but i figured surely if i got a really good mobo, it'd at least be decent.

But no

MY RAM is 5-5-5 @ 389MHz, so I am running it a little under spec. I honestly haven't tried a lower multi to see how high I could get the RAM.

Back in the A64 days, I used to try and run high speed RAM (the old Mushkin Redlines that could run fast with high voltage), but now I don't really worry about trying to run high-speed RAM.

I've read that running 1:1 is sometimes easier for the NB to handle, so I try and stick to that. If I ever get a e8400, I guess I will need to get some high speed RAM to be able to run up the e8400.

 

[n7]

So i wanted to update this tonight, since i finally got around to testing the dimms individually.

I did testing relatively briefly to save some time, so don't take these as absolutely 24/7 stable clocks, only more thorough testing would show that for sure.

I ran Memtest86+ initially, & then HCI to about 20+% to get screenies.
Though not always, if i can get 20% or higher with HCI, it's usually very close to stable if not stable.

Mushkin 996580 XP2-6400 - DDR2-800 4-4-4-12 (two 2x2 GB kits) tested one dimm at a time.
vdimm = 2.1V set in bios, which is read as 2.02V actual via software

dimm 1 = DDR2-1124 5-5-5-15
dimm 2 = DDR2-1080 5-5-5-15
dimm 3 = DDR2-1100 5-5-5-15
dimm 4 = DDR2-1090 5-5-5-15

I'm very happy with the results.

Worst of the four dimms does 540 MHz @ less than warrantied vdimm.