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SR-2 troubles

you know, tobit's case is really interesting since he's using the exact board and RAM that ran a couple of L5640s up to something like 215 bclk. Clearly, those CPUs are holding his OC back.
 
jebo_4jc said:
you know, tobit's case is really interesting since he's using the exact board and RAM that ran a couple of L5640s up to something like 215 bclk. Clearly, those CPUs are holding his OC back.
Click to expand...

This board and RAM Im using ran E5530s up to 205 bclk with no problems. I'm thinking the A0 stepping of our extra spiceys might be the problem.
 
I think I am finally bigadv stable now at 3.4 GHz. Time will tell.
 
DooKey: Try the following settings. My memory timings are set manually at 8-8-8-24. Don't ask me about vcore being auto, just seems to work better this way. *shrugs*

bios1.jpg


bios2.jpg


bios3.jpg


bios4.jpg
 
I'll give that a shot, but it is close to what I've already tried. But you never know.

FYI, I have noticed I have RAM missing at times. Usually 2gb........wonder if this is the prob, or what is causing the missing mem is the prob.......

I've seen this when I get into Ubuntu.
 
Make sure there is zero flex in the motherboard, and test your RAM. Those are two possible issues. I had an improrperly installed CPU heatsink that was causing RAM to show up missing sometimes. You can try to isolate the problem by using the jumper to disable one of the processors (and the associated RAM slots). If it's missing in the OS, it's probably also missing in BIOS, but might only happen on random boots.

Also, if NUMA is currently disabled, you might want to try enabling it while debugging your overclock. It hurts PPD but seems to aid stability.
 
Yeah I have the missing RAM issue st times. It foes seem mobo flex related.
Posted via Mobile Device
 
I have had the good fortune to have the missing ram for two reasons - motherboard flex as well as 24GB/12dimms needing slightly looser timings - same as those with 48GB have found.

SR2#1 - 12x 2GB.
Default:
7 8 7 20 8 59 4 4 4 20 1T 0 63 64 66
looser = 100% boot reliably with all ram:
8 9 8 24 10 67 5 5 5 24 1T 0 73 74 75

SR2#3 with 12GB - 6 x 2GB
Auto = mem errors
7 8 7 20 8 59 4 4 4 20 1T 0 59 60 62
stable =
7 8 7 20 12 88 6 5 6 24 1T 0 67 68 69
 
70% complete on it's first, non-bench, work unit (p2686) at 3.4 GHz (170x20). I am fairly certain this is stable. However, I am not satisfied with this OC and, next, I am thinking of disabling turbo to see if I can't clock it higher. Maybe it's a turbo issue on these ES chips since I know the board doesn't have any BCLK issues up until around 216. *shrugs*
 
My SR-2 with X5650s is currently running at 3.78GHz (172x22), and it won't go any higher. Some Xeons just don't like high BLCKs. My other SR-2 with L5640s will run at 200 BCLK as long as I keep it cool.
 
SazanEyes said:
My SR-2 with X5650s is currently running at 3.78GHz (172x22), and it won't go any higher. Some Xeons just don't like high BLCKs. My other SR-2 with L5640s will run at 200 BCLK as long as I keep it cool.
Click to expand...
I didn't know that Sazaneyes. That's good info. I have a single X5650 in a X58 mobo that is unstable at anything about roughly 3.6ghz. Still dialing it in.
 
Yeah, MIBW got lucky with his X5650s I think. I suppose some of the newer Xeon models could be similar to mine. At least mine don't need a lot of voltage to reach their max OC (giving them more accomplished nothing).
 
It's definitely a cpu problem for me. I put my E5530s back in and I can run bclk of 205 in windows and 185 in Ubuntu no probs. Even though Ubuntu is less tolerant of the bclk I get more production in Ubuntu so I'll stick to this on the Sr-2. I'm going to put my E5649s in the Z8NA and run it stock there. I'm good with that.
 
DooKey said:
It's definitely a cpu problem for me. I put my E5530s back in and I can run bclk of 205 in windows and 185 in Ubuntu no probs. Even though Ubuntu is less tolerant of the bclk I get more production in Ubuntu so I'll stick to this on the Sr-2. I'm going to put my E5649s in the Z8NA and run it stock there. I'm good with that.
Click to expand...
tough break on the CPUs :(

I hope the Z8NA treats you better
 
Activate: AMD said:
tough break on the CPUs :(

I hope the Z8NA treats you better
Click to expand...

Shouldn't be a problem. The E5649s ran just fine at stock. Stock is all you get out of a Z8NA. The bright side is they are nice low voltage chips. Just over 1v at stock. Power draw will be minimal.
 
Welp, I tried disabling turbo and increasing the BCLK but that didn't work. These E5649 CPUs just don't like high BCLKs for some reason. However, I am still having slightly better luck than brother DooKey. 180x20 is not quite bigadv stable but 170x20 is. I am now slowly raising BCLK to see what the limit is here and I'm currently at 173x20. I'm going to try 176x20 next.

I think my long-term plan will be something like DooKey's, put these in a Z8NA and find some better Xeons for the SR-2. I already have one Z8NA, what's wrong with another? :cool:
 
Sorry to hear about your trouble guys. That's frustrating.

Tobit what CPUs are in your z8na?
Posted via Mobile Device
 
Welp, I am now folding a p2689 at 3521.05 MHz (176.05 x [20]). I am now getting to close to were I started reaching BCLK limits before. I'm seriously considering swapping CPUs around when this unit finishes. Move these mediocre E5649 hexes into my Z8NA and run my E5640 quads in the SR-2 instead since the quads are proven at 4 GHz already. It might end up being a wash PPD wise but there is only one way to find out.
 
I'm finally making slow forward, and upward, progress (I think). It's beginning to look like lower voltages may be the key!

I am currently 15% into a bigadv bench unit (p2689) at 3.6 GHz (180x20). Although not proven stable yet, this is the most frames I've been able to complete so far at this BCLK. vcore is currently 1.3V and vtt is 1.35V. Both are significantly lower than some brute force voltages I was trying earlier.
 
interesting.

do you have your water blocks on already? do you think it's a temp issue?
 
jebo_4jc said:
do you have your water blocks on already? do you think it's a temp issue?
Click to expand...
No and no. Still on air, temps haven't gone above 66C during folding regardless of voltage settings. When I first started playing with them around 4 GHz and 4.2 GHz, I was running in the mid 70's.
 
Welp, I have officially given up. 173x20 is simply the best I can do on these E5649's. Frustrating. I might swap some CPUs around this weekend and just run them stock in the Z8NA.
 
I suspect those E5649 chips are very similar to the X5650, which generally have a BCLK limit in the 170-175 range too (unless you get lucky). I just bumped the overclock on my L5640 box after adding some fans, and it's annoying that it's nearly the same clock speed as the X5650 box (200x18 vs 172x22). I think I can push the L5640s harder too, I just haven't had time to work on it.
 
The other thing about these E5649s is that they are revision A0. First spin isn't so hot this time around. As soon as my HSFs get here I'm putting mine in my new Z8NA.
 
My Z8NA is working like a dream with my E5649s! Nice stuff. Setting up Ubuntu now.
 
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Nice DooKey

After doing some number crunching, I think I am just going to leave the E5649's in the SR-2. At first I thought the points would work out to be about even (a wash) but after seeing nice performance on p6901's, I think I'd actually take a small PPD hit even if I could get the E5640's up to 4.1 GHz.

p6901:

152K PPD - SR-2 with E5649's at 3.4 GHz
_64K PPD - Z8NA with E5640's at 2.8 GHz

Meanwhile, I have pair of Gainestown quad cores on the way that I need to find the budget for for another Z8NA or, gasp, another SR-2. The end goal being to retire my three Q6600's once the third 2p rig is online.
 
Geez 152k. I need to switch to Linux.
Posted via Mobile Device
 
jebo_4jc said:
Geez 152k. I need to switch to Linux.
Posted via Mobile Device
Click to expand...

Yes you do. I'm running it on both of my dual proc boards as dedicated folders and the PPD boost is nice! The guide musky wrote is awesome and easy to follow.

Just do it! and...

Fold On!
 
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