Phenom 9850BE low voltage overclocking results!

[fullinfusion]

I remember having a hard time going over 2.5 GHz with my 9850-9950. What a difference.

i had it higher but the system responded like i've never seen before...... just weird all together.... i had a feeling if i didnt back it off i wouldnt be here now lol..... KaBOOMMMMM!!!!

 

[fullinfusion]

Hey Ppl.... i want to know something..... do you think the memory will run 1T mode in the 1066MHz setting?
It does with this 940 in the 800MHz setting without a problem....

 

[fullinfusion]

Hey i want some input here please...... will ram running 828MHz at 4.4.4.10.15 1T mode run faster than ram running at 1103MHz T2 5.5.5.15.25

 

[fullinfusion]

bump for such a great thread and better yet all the Bro's

 

[Chicken Patty]

Brad I think 1t is the biggest difference.

 

[trt740]

Hey i want some input here please...... will ram running 828MHz at 4.4.4.10.15 1T mode run faster than ram running at 1103MHz T2 5.5.5.15.25

no it will not run faster

 

[fullinfusion]

no it will not run faster

ok so you gave me some input..... so how about a recommendation then ? why you say that?

 

[trt740]

ok so you gave me some input..... so how about a recommendation then ? why you say that?

not sure what your asking but as far as I know no DDR2 1066 runs T1 stable. Still DDR2 1100 will blow away anything near DDR2 800. However, memory has very little effect on overall systems performance. DDR2 800 with tight timing is plenty fast for anything except High FSB overclocking, and thats not a issue with the phenom. The answer to your question is I have tested both. Your DDR2 800 at that timing is very close to DDR2 1066 at 55515 t2 but not DDR2 1100 55515 t2 and don't forget both of them will overclock at that timing at least 50 mghz more, giving it more of a lead.

 

[fullinfusion]

not sure what your asking but as far as I know no DDR2 1066 runs T1 stable. Still DDR2 1100 will blow away anything near DDR2 800. However, memory has very little effect on overall systems performance. DDR2 800 with tight timing is plenty fast for anything except High FSB overclocking, and thats not a issue with the phenom. The answer to your question is I have tested both. Your DDR2 at that timing is very close to DDR21066 at 55515 t2 but not DDR2 1100 55515 t2 and don't forget both of them will overclock at that timing at least 50 mghz more, giving it more of a lead.

thanl you TRT..... you answered my question.... i must agerr with ya on this one.... and as far as 1066 mode 1T mode...... i couldnt even get it close to the windows start up screen..... so what i've done is set the memory to 1066 mode (1103MHz) using T2 5.5.5.15.20.... seems just as good as 800 @ 1T

 

[ChaoticAtmosphere]

the way you said that was pretty funny lol


keep the memory low, make your cpu stable at 3.0 ghz, then work on your meme, dont clock both at once I know what im telling you

also keep your HT and NB and defaults for now. up that once your cpu is stable

man why dont you just set the ram to run at 800MHz mode and lower the cpu multi a tad?
by raising the bus speed your getting the best of both worlds..... it's a good blend of cpu and memory over clock..... even at 800mhz and low timings its faster than 1066mhz mode with its slower timings.... remember its the bus speed that makes shit happen...

Okay. So I'm back in the BIOS and set everything manually to stock:

FSB: 200
CPU Multi: 12.5
CPU-NB: 10
HT Link: 2Ghz
CPU Core V: 1.275
CPU-NB V: 1.275
NB V: Auto
SB V: Auto
CPU Vdda: 2.5 (should I go 2.6 right now?)
Auto Xpress: Auto
CPU Tweak: Diabled
ACC: 0%
Memclk: 800Mhz
Timings: Auto for now (any suggestions?)

So I'm going to start raising the FSB now. 2 questions.

1. Should I always keep the CPU Core and the CPU-NB voltages exactly the same and if not when is it the you would set them differently?

2. The MemClk option starts at 400 then 533, 667, 800 and finally 1067. Would choosing 1067 mean it's 1066 mode? and 800 800 mode? I noticed that these values change when raising the FSB so to me, choosing a mode doesn't make sense. Or say I raise the FSB in the mode I'm in now (800Mhz) will it eventually turn into 1066 mode as I approach say 260 FSB?? Memory settings discombobulate me especially from what I read in forums to what I see in the BIOS options! No biggie. I'm closer to understanding it now than 4 weeks ago but I just want to make sure that my thinking is on the right track.

 

[Chicken Patty]

leave the mem at 800, so when you overclock it stays under or around 1066.


i see all options ok, howeever put vdda at 2.6v CPU NB V works better on auto for some people and disable auto express.

 

[ChaoticAtmosphere]

Okay, Believe it or not, I had a good nights sleep. Before I went to sleep, I upped the fsb to 210, booted into windows, then ran Everest, waited 5 minutes to make sure the temps would stable out and they did. Woke up again, upped the fsb another 10 to 220 and repeated this step and fell asleep. Woke up this morning, and upped the fsb to 230, ran everest, made sure temps were stable, then made coffee, took a shower and blah blah blah. All settings are the same as above CP and look at the results:

The voltage is still at 1.275. I'm so happy it didn't BSOD like I expected it to!!

I think Chip has finally decided to stop being a rebel Weird though. I'm just about at 2.9 with almost the same settings as before, no BSODs and my temps are stable!! I'm so happy!!! I can't wait to get home and run a stress at 240FSB/ 3.0Ghz core clock. Usually my temps went through the roof (over 61 degs.) when I had my mem timings adjusted manually. So I'm going to set FSB at 240 right now and let it stay idle while I'm at work. Have a gr8 day everybody!!! And thanks!!!

 

[Chicken Patty]

where you using FSB or multi to overclock before?

 

[ChaoticAtmosphere]

where you using FSB or multi to overclock before?

FSB. As I said, I haven't changed anything except put the RAM timings to auto and chose 800Mhz for MEMclk before upping the the FSB again and I lowered the DDRv to 1.8.

I ran everest for tenn mins before leaving for work and saw that the core temps were stable at around 46-47 so I left it running. I got no BSODs on previous 1/2 hour tests so if it's still running when I get home I guess that means it'll be stable at 3.0 finally!! I'll keep you posted by 9 pm.

 

[Chicken Patty]

FSB. As I said, I haven't changed anything except put the RAM timings to auto and chose 800Mhz for MEMclk before upping the the FSB again and I lowered the DDRv to 1.8.

I ran everest for tenn mins before leaving for work and saw that the core temps were stable at around 46-47 so I left it running. I got no BSODs on previous 1/2 hour tests so if it's still running when I get home I guess that means it'll be stable at 3.0 finally!! I'll keep you posted by 9 pm.

well thats great news bro, keep us posted.

 

[ChaoticAtmosphere]

Stable Finally!!!!!

So I just got home, and as I got off the elevator on my floor I got a slight butterfly in my stomach as I wondered whether Everest would still be running and when I got in this is what I found:

WooHoo!! Stable @ 3.0Ghz after a 12 hour stress!!! F*** am I ever happy! What a relief!! This only on a voltage of 1.275!!! I'm doing cartwheels!!!

 

[ChaoticAtmosphere]

Okay. Now I'm confused. Why, after 12 hours of stress with no BSOD, would I get a BSOD 20 or so minutes after I stop the the test while I'm only checking e-mail????

 

[Chicken Patty]

Okay. Now I'm confused. Why, after 12 hours of stress with no BSOD, would I get a BSOD 20 or so minutes after I stop the the test while I'm only checking e-mail????

why dont you try running memtest and test out your RAM overnight? I have a feeling its something else and not your CPU.

 

[Kei]

That's a normal thing Chaotic, most people don't realize that the truly hardest part of a full system stress test is AFTER you stop the system from 100% load and just use it normally.

In order to have an accurate torture/stress test you need to run the sytem with whatever program of choice for several hours and then IMMEDIATELY after the 100% stress you should use the system for at least 1 hour or so to see if it's truly stable.

People will find that something they thought was 100% stable isn't quite so if they do a test of that nature. For some people it doesn't matter to them and they like to have the big number so they don't want to see if fail which I can understand. I rather like knowing that my system is outside of some foolish move by me 100% stable at whatever setting I use it at.

I say knock the speed down just barely and if you've got time run it again.

Kei

 

[Kei]

Better yet knock that HT Link down to 2000 again and it will probably be stable without doing anything else. You're not really gaining anything from upping the HT Link to that high of a speed, but you can be making it unstable with that speed.

Kei

 

[Chicken Patty]

That's a normal thing Chaotic, most people don't realize that the truly hardest part of a full system stress test is AFTER you stop the system from 100% load and just use it normally.

In order to have an accurate torture/stress test you need to run the sytem with whatever program of choice for several hours and then IMMEDIATELY after the 100% stress you should use the system for at least 1 hour or so to see if it's truly stable.

People will find that something they thought was 100% stable isn't quite so if they do a test of that nature. For some people it doesn't matter to them and they like to have the big number so they don't want to see if fail which I can understand. I rather like knowing that my system is outside of some foolish move by me 100% stable at whatever setting I use it at.

I say knock the speed down just barely and if you've got time run it again.

Kei

Thats really true Kei, however some people overlook RAM also. Stress tests test RAM but not as much as MEMtest. MEM TEST will really push the RAM and bring out any instability out of it. I think it is just as important to run it as it is to run everest for the CPU or Prime for example.


However, I also find that stress tests are not necessary for everyday use. The settings im at right now with my i7 I have ran them for about a month already, never stress tested, just a few 3dmark runs, gaming, and everyday use. Its never crashed on me not once or BSOD'd. I have been crunching with these settings for about 6 days now as you can see below in the results for my team. Stress tests just bring it out sooner, in my case it fails two weeks from now, I'll just tweak it the same way you or anybody else is if it fails with Prime, I don't see the need for the abuse, just my two cents of course and I truly back you up on your previous post and respect your opinion to the fullest. You are master Kei

 

[Chicken Patty]

Better yet knock that HT Link down to 2000 again and it will probably be stable without doing anything else. You're not really gaining anything from upping the HT Link to that high of a speed, but you can be making it unstable with that speed.

Kei

I never really saw a performance difference with a higher HT link, now however the NB really made the rig rock!!

 

[ChaoticAtmosphere]

why dont you try running memtest and test out your RAM overnight? I have a feeling its something else and not your CPU.

Thanks CP. I do have MemTest and did a 30 minute full passover with four of them running @ 700MB each with no errors. I will run it overnight tonight.

That's a normal thing Chaotic, most people don't realize that the truly hardest part of a full system stress test is AFTER you stop the system from 100% load and just use it normally.

In order to have an accurate torture/stress test you need to run the sytem with whatever program of choice for several hours and then IMMEDIATELY after the 100% stress you should use the system for at least 1 hour or so to see if it's truly stable.

People will find that something they thought was 100% stable isn't quite so if they do a test of that nature. For some people it doesn't matter to them and they like to have the big number so they don't want to see if fail which I can understand. I rather like knowing that my system is outside of some foolish move by me 100% stable at whatever setting I use it at.

I say knock the speed down just barely and if you've got time run it again.

Kei

Better yet knock that HT Link down to 2000 again and it will probably be stable without doing anything else. You're not really gaining anything from upping the HT Link to that high of a speed, but you can be making it unstable with that speed.

Kei

Thanks Kei, you must admit though that with the help of you good folks I have made huge progress. Rmember when I PM'd you about my temps running sky high only after 4 minutes with Everest? It'd hit 70°C and would still climb so I'd abort. The screen shot above is after 12 hours and 10 minutes and max temp hit was 51°C with an Avg of 48°C. Not too shabby. I'm really not worried about that BSOD. I pushed the reset button and booted back into Windows without a problem and haven't had one since. It just didn't make sense that it would BSOD under less load after 12 hours of full...lol!!!

I think it's safe to say that my current settings a pretty stable, I even had a session of NFS Undercover with no hangs, BSOD's or Win7 telling me that it has stopped working. The HT link speed only got that high by raising the FSB. I'll lower it closer to 2000Mhz.

And remember Kei, I did the full Everest stress test for 12 hours at 1.275vCore

 

[Chicken Patty]

Thanks CP. I do have MemTest and did a 30 minute full passover with four of them running @ 700MB each with no errors. I will run it overnight tonight.





Thanks Kei, you must admit though that with the help of you good folks I have made huge progress. Rmember when I PM'd you about my temps running sky high only after 4 minutes with Everest? It'd hit 70°C and would still climb so I'd abort. The screen shot above is after 12 hours and 10 minutes and max temp hit was 51°C with an Avg of 48°C. Not too shabby. I'm really not worried about that BSOD. I pushed the reset button and booted back into Windows without a problem and haven't had one since. It just didn't make sense to me...lol.

I think it's safe to say that my current settings a pretty stable, I even had a session of NFS Undercover with no hangs, BSOD's or Win7 telling me that it has stopped working. The HT link speed only got that high by raising the FSB. I'll lower it closer to 2000Mhz.

And remember Kei, I did the full Everest stress test for 12 hours at 1.275vCore

bro my rig at default voltage BSOD'd once, how the hell, it could randomly happen, however two or three times then its instability. one bsod maybe is nothing, it happens again then bump the vcore just a bit. You might need 1.300v to be fully stable . I'll tell you from past experiences with 9850-9950's!

 

[ChaoticAtmosphere]

bro my rig at default voltage BSOD'd once, how the hell, it could randomly happen, however two or three times then its instability. one bsod maybe is nothing, it happens again then bump the vcore just a bit. You might need 1.300v to be fully stable . I'll tell you from past experiences with 9850-9950's!

I was thinking of doing that too along with manually lowering the HT link.

At least I can now say that proudly that my rig runs at 27°c idle and 49°c under load.