Help overclocking!
Here is my rig I'll add to my sig later:
Opteron 175
Asus A8R-MVP
Mushkin Redline pc4000xp 2gb dual channel 3-3-2-8@ 2.6v
Evga 7800gt
I'm trying to get the most out of this ram so can you help me losen the timings ...I'm not sure where to start. This is what I have so far ...and I'd like to be able to take it farther. Simply changing the multi to 9x or even lower doesn't get me farther.
Here are my bios settings:
cpu frequency: 240
pcie frequency: 100
multiplyer: x11
processor voltage: 1.400v
ddr voltage: 2.80v (does same @ 2.65v)
pci-express voltage: +1.20v
vcore over-voltage: enable
southbridge over-voltage: enable
peg link mode: auto
peg buffer length: auto
ht link speed: 1ghz
rd480 ht pll control: normal
dram ecc enable: enabled
memclock value: 200mhz
cas latency (cl): 3.0
tras: 8 clk
trp: 2 clk
trcd: 3clk
trrd: 2t
trc: 11t
trfc: 17t
trwt: 4clk
read preamble: 5.5ns
asyc latency: 7.0ns
cmd-addr timing mode: 1t
bank interleaving: auto
burst length: 4 beats
hardware memory hole: disabled
Thanks
csimon
Opteron 175
Asus A8R-MVP
Mushkin Redline pc4000xp 2gb dual channel 3-3-2-8@ 2.6v
Evga 7800gt
I'm trying to get the most out of this ram so can you help me losen the timings ...I'm not sure where to start. This is what I have so far ...and I'd like to be able to take it farther. Simply changing the multi to 9x or even lower doesn't get me farther.
Here are my bios settings:
cpu frequency: 240
pcie frequency: 100
multiplyer: x11
processor voltage: 1.400v
ddr voltage: 2.80v (does same @ 2.65v)
pci-express voltage: +1.20v
vcore over-voltage: enable
southbridge over-voltage: enable
peg link mode: auto
peg buffer length: auto
ht link speed: 1ghz
rd480 ht pll control: normal
dram ecc enable: enabled
memclock value: 200mhz
cas latency (cl): 3.0
tras: 8 clk
trp: 2 clk
trcd: 3clk
trrd: 2t
trc: 11t
trfc: 17t
trwt: 4clk
read preamble: 5.5ns
asyc latency: 7.0ns
cmd-addr timing mode: 1t
bank interleaving: auto
burst length: 4 beats
hardware memory hole: disabled
Thanks
csimon
0
Comments
ht link speed: 1ghz - Set this to 800 MHz, which corresponds to a 4X HT multi. You are running the HT link way too high at this setting.
dram ecc enable: enabled - That is unbuffered ram, so change that to disable.
cpu frequency: 250
pcie frequency: 100
multiplyer: x9 when testing ram
processor voltage: 1.400v
ddr voltage: 2.70v (does same @ 2.65v)
pci-express voltage: +1.20v
vcore over-voltage: enable
southbridge over-voltage: enable
peg link mode: Normal or disabled
peg buffer length: Disabled or Normal if it exists
ht link speed: 600 first, then try 800
rd480 ht pll control: Dunno, but disable it firstl
dram ecc enable: Disabled
memclock value: 200mhz
cas latency (cl): 3.0
tras: 8 clk
trp: 2 clk
trcd: 3clk
trrd: 3t
trc: 16t
trfc: 22t
trwt: 4clk
read preamble: 5.5ns
asyc latency: 7.0ns
cmd-addr timing mode: 1t
bank interleaving: auto
burst length: 4 beats
hardware memory hole: disabled
Some things can be tightened but lets shoot for max htt first.
with that low voltage you won't get anywhere with that redline stuff---max it out to as much as your mobo can handle. make sure to have some active cooling on it when you take it over 3.0v and you should be fine. once you get the voltage up, then you can tighten the timings and push your frequency way up.
See below:
cpu freq: 250
pcie freq: 100
multi: x9
proc volts: 1.400v
ddr volts: 2.70v
pci-e volts: +1.20v
vcore over-volts: enable
sb over-vs: enable
peg link mode: disable
peg buffer length: auto (options auto-short-long-longer-longest)
ht link speed: 600 (800 no post)
rd480 ht pll control: normal (options normal-fast)
dram ecc: disable
memclock: 200
cl: 3.0
tras: 8
trp: 2
trcd: 3
trrd: 3t
trc: 16t
trfc: 22t
trwt: 4
read preamble: 5.5ns
asyc latency: 7.0ns
cmd-addr timing mode: 1t
bank interleaving: auto
burst length: 4 beats
hardware memory hole: disabled
I think you're thinking of the 1gb redline pc-4000xp ...sorry I edited the desription thanks
cpu freq: 260
pcie freq: 100
multi: x9
proc volts: 1.400v
ddr volts: 2.70v
pci-e volts: +1.20v
vcore over-volts: enable
sb over-vs: enable
peg link mode: disable
peg buffer length: auto
ht link speed: 600
rd480 ht pll control: normal
dram ecc: disable
memclock: 200
cl: 3.0
tras: 8
trp: 2
trcd: 3
trrd: 3t
trc: 16t
trfc: 22t
trwt: 4
read preamble: 5.5ns
asyc latency: 7.0ns
cmd-addr timing mode: 1t
bank interleaving: auto
burst length: 4 beats
hardware memory hole: disabled
After that, work on the alphatimings below.
Post a memory benchmark before and after as well as a memory screen from cpu-z.
memclock: 200
cl: 3.0
tras: 8
trp: 2
trcd: 3
trrd: 3t
trc: 16t
trfc: 22t
trwt: 4
Check how low you can get the TRC and TRWT. TRC at 7 is the best, but possibly not doable. Drop it to 12 and try. Then to 9. When that's done, drop the TRWT to 3 and try. If that works, drop it to 2. Last, try the TRFC to 16, then 12.
Apparantly I installed the Asus antivirus utility. As soon as I noticed it was the Symantec 90 day crap I tried uninstalling it. I even ran regcleaner and everything I could think of my there are still remnants floating around. Now everytime I try to run cpu-z etc I get error messages so I am going to re-install OS -Symantec.
On another note ...I can get around 267 with memclock: 183 and the ht link speed really likes 400 more than 600. Just a few things I noticed.
Other than that I've noticed that when everything is set as we went thru previously (250 x9 600 etc) ...I have to really concentrate to get to the bios ...it flies by so damn fast I have to start pressing del before I ever see anything on the screen. Even w/ quick boot disabled!
Anyway I'll start on tightening the timings as you suggest above at 255 once I get the OS reinstalled and I post some more benches and stuff. Which mem bench would you prefer?
edit:\ after some tinkering I finally got them to show ...see attached.
Actually I believe it to be a driver issue. Apparantly what was happening along the driver installation process is everything went smooth until I began the windows updates. I was updating the marvell yukon gigabit driver thru windows update and I believe it was the wrong model type or something. Everytime I logged into windows afterwards it would reboot. Had I omitted the log in screen I would have definitely been in an infinite reboot loop. Anyway I reinstalled the os and drivers including yukons last night and omitted the windows-update yukons. No reboots and everything ran smooth throughout the night and folding 100%.
So ...I'll move back on up to where we left off and do some memtesting and report back asap. :headbange
edit:\ I need to post something about this issue in the asus forum because I went back to w-u to check it out and it appears to be the same driver. I bet I won't be the only culprit of this update ...if in fact it was the problem at all. :shakehead
It seems that I was getting more benefit from the higher mem frequency ...I suppose I should see if I can get back to that ...
I got to 258 this time surprisingly ...though I seriously doubt this is memtest86+ stable. But just for giggles this is what I got.
Nothing impressive in the above passed memtest so I'm not sure if I'm at the beginning or the end of my project. Seems I should get more out of this mem ...and I know I can get 2650 out of the proc.
Could it be 1t has been holding me back all along?
It basically was a compilation of benchmarks which showed practically no measurable difference between the two, at least in real-life usage.
If I'm not mistaken, my MSI K8N2 board requires one to switch to 2T if you use the second set of dual-channel RAM slots. Of course, your board may be different. I know that if I ever find myself in the position of needing another GB of RAM I'll be happy enough to change the setting in order to do so.
Good news is ...2t allowed me to get back up to 257 memtest86+ 1x pass stable. The only time I've seen a memtest pass completely thru once is when I've enabled 2t. Life is wonderful again!
I think I need to loosen the timings again to try and get higher ...there must be something left to this redline because a 7mhz overclock isn't much. I really think it's the timings.
I'm posting this 257 benchmark just for you prof ...2t and metest stable!
--I'm jealous!!!!!!!
For some reason it just feels like the vcore is holding me back. 1.4v is the highest setting but then there is over-volting. With overvolting the voltage will vary anywhere from as low as 1.4v to 1.5v. I've even seen it get as high up as 1.52v. I hope my psu isn't the crap but I remember reading a review about this unit where they can tweak it. I'm going to surf a little a see what I can dig up.
Right now I'm at 258 w/2.9v ddr and my vcore=1.46v-1.47v +3.3=3.41 +5=5.17v +12=11.54v
Am I the only one who sees the irony of this? I mean you in alaska with those hot procs screaming at over 3ghz and me in louisiana with the cool procs under 2.7ghz ...merry christmas leon!
I need more vcore. :bawling:
you could be one of the first brave souls to vcore mod the a8r-mvp....here are some kits you could use.
http://forums.pcper.com/showthread.php?p=2864322
or you could beg asus to release a BIOS update with more vcore options for the holidays.
You should try the asus forum ...full of beggers! I guess that'll be my first resort.
Thanks for your reply ryko ...I really want this to work out.