Kuma overclocking thread

[DaMulta]

i ran the MSI as well and my Biostar 780G clocked better

Don't believe it LOL

I've had that chipset and it sucked LOL

 

[Darknova]

16x200 = 3200 , so how can it be running at 3.8ghz

16x238.08

 

[KBD]

had to drop mine back to 3ghz , started getting bsod's this morning

it also could be the RAM holding you back. thats why you gotta fiddle with the settings a bit. Try dropping your RAM to 667 and then overclock the CPU, stress with prime/orthos/OCCT and then overclock some more if its stable, repeat until its not. Also, you may have to lower your HTT multiplier, i know for AM2 i dropped it to x4 and going above 1100MHz is not receomended but with AM2+ its obviously different may be someone can help you with that as i never owned an AM2+ system and dont know what those should be set to.. Basically, the point of all this is to find out how high you can take your CPU and/or HT bus.

 

[chaotic_uk]

would it help getting 1066 ram ? , how much of a boost would i get from the extra speed ram ? . would this help with a little extra performance , i have always had problems with this ram running it in epp mode if over clock when i was running my old x2 6000

 

[chaotic_uk]

managed to get it back to 3.2ghz . had to change the memory timing from 4.4.4.12 to 5.5.5.18 (stock settings are 4.4.4.12) . but i also have ran vantage and got this message lol

Similar systems
Unfortunately the ORB contains only 2 similar system configuration(s), which is an insufficient amount of produce a comparison graph.All systems

i thought their would have been more by now , do these scores seem ok ?

results with 4870 @ 790/1100

7750 BE @3.2
7650
http://service.futuremark.com/compare?3dmv=625824

x2 6000 @ 3.2
7476
http://service.futuremark.com/compare?3dmv=481306

 

[KBD]

managed to get it back to 3.2ghz . had to change the memory timing from 4.4.4.12 to 5.5.5.18 (stock settings are 4.4.4.12)

good going, thats what i meant when i sed play with the settings. timings and RAM frequency sometimes are a bottleneck. In regards to getting DDR2-1066, im not sure. If your board would detect that RAM at 1066 and then you can overclock it further then i think its worth it. And even if it doesnt it may still be worth to get some better RAM to eliminate your bottleneck, something that will be capable of running at tight timings and high frequencies, if you can find a good deal on a nice 1066 i think you should get it.

 

[chaotic_uk]

yes my mobo supports ddr2 1066 ram , will get some soon

 

[chaotic_uk]

what memory timing etc is evey body using ?

 

[KBD]

what memory timing etc is evey body using ?

that RAM you have doesnt take kindly to tight timings. I can give you the timings ranges i used on my AM2 board with Mushkin XP2-6400 and Corsair XMS2 Cas3, which are basically cherry picked XMS2 chips capable of very tight timings. Obviously not all of them will be stable so you have to do a lot tweaking, it took me some time to figure this stuff out. You may have to loosen them even beyond the ranges i provided since your RAM is different. Also, as you increase the RAM frequency you will have to loosen them to achieve stability. And dont forget about RAM voltage, you will need that as well.

Anyway here it is:

tCL -- 3-5
tRCD -- 4-5
tRP -- 3-5
tRAS -- 8-18
Command Rate -- 2T
tRRD - 2-3
AsyncLat -- 5-8ns
tRC -- 18-23
tWR -- 3-6
tRWT -- 2-4
tWTR -- 2-3
tREF -- 7.8us

I hope i didnt forget anything and that AM2+ is not too different than AM2.

 

[Meizuman]

whats wrong with amd overdrive ? , the readings are incorrect lol . 3.8ghz lol

You have AOD 2.1.5? I switched back to 2.1.4 because I got 6,4GHz readings when I was at 3.2!

 

[chaotic_uk]

that RAM you have doesnt take kindly to tight timings. I can give you the timings ranges i used on my AM2 board with Mushkin XP2-6400 and Corsair XMS2 Cas3, which are basically cherry picked XMS2 chips capable of very tight timings. Obviously not all of them will be stable so you have to do a lot tweaking, it took me some time to figure this stuff out. You may have to loosen them even beyond the ranges i provided since your RAM is different. Also, as you increase the RAM frequency you will have to loosen them to achieve stability. And dont forget about RAM voltage, you will need that as well.

Anyway here it is:

tCL -- 3-5
tRCD -- 4-5
tRP -- 3-5
tRAS -- 8-18
Command Rate -- 2T
tRRD - 2-3
AsyncLat -- 5-8ns
tRC -- 18-23
tWR -- 3-6
tRWT -- 2-4
tWTR -- 2-3
tREF -- 7.8us

I hope i didnt forget anything and that AM2+ is not too different than AM2.

whats the best ram to run with these cpu's ? , my ram is cas4 corsair (CM2X1024-6400C4) . it seems to hate overclocking at the stock timings etc , not sure if i should get new ram @ 1066mhz speeds or 800mhz . which is the best for overclocking ?

You have AOD 2.1.5? I switched back to 2.1.4 because I got 6,4GHz readings when I was at 3.2!

yes i have AOD 2.1.5

 

[Meizuman]

I haven't got problems with 2.1.4 so I suggest you go for it. There is some minor bug fixes in 2.1.5 but when the readings are so f*d up, I don't want to use it. It reported real clocks when I had default settings in bios. But when I OC'd from there, AOD went crazy with readings. Reported over 1200MHz Ram, 4GHz HT Link and so on...

 

[KBD]

whats the best ram to run with these cpu's ? , my ram is cas4 corsair (CM2X1024-6400C4) . it seems to hate overclocking at the stock timings etc , not sure if i should get new ram @ 1066mhz speeds or 800mhz . which is the best for overclocking?

well, first off its best to run 2 sticks of any RAM, for best results either a 2x1GB kit of a 2x2GB kit. 4 sticks put more stress on the controller and some boards dont like all 4 slots populated. If you r still using XP 2x1GB kit should be fine, Vista on the other hand likes 4GB minimum. Now the best DDR2 RAM for overclocking uses Micron D9GHM chips, you can still buy these around. You can still get DDR2-800 as some D9s overclock very well, it is possible that you will not reach DDR2-1066+ speeds on AM2+ unless your board is capable of reaching a high HTT bus frequency. My top recomendations from personal experience would be these, most come in either DDR2-800 or 1066 flavors: Buffalo Firestix, Transcend Axeram, Mushkin XP2-8500 & 6400, Mushkin Redline XP2-1000. I also hear that Geil Black Dragon, Gskill Black Pi and Crucial Ballistix are good but had no experience with them, perhaps someone can recomend something else.

 

[chaotic_uk]

using vista 32bit atm , not sure if i will change back to xp pro 64bit yet (have both lol )

 

[KBD]

using vista 32bit atm , not sure if i will change back to xp pro 64bit yet (have both lol )

i'd stick with Vista, and thats coming from a long time XP fan. The only advantage of 64 bit is that you can use 4GB+ of RAM. So if you are going to contunue using Vista keep 4GB. I did say that its better to use 2 RAM slots, but if you are going to get any of the Micron D9 RAM they only come in 1GB sticks so you'll need to get 4x1GB and that will limit your overclock somewhat but its not that big of a concern with these sticks.. I'm running 4x1GB of Firestix now and its working great so far. Otherwise get a 2x2GB kit.

 

[3dsage]

Here's a guide that will help you find some of those D9's sticks, Firestix, Geil Black's are the bestest IMO. I found that newegg doesnt really have any D9 flavors, so you have search other shops.

http://ramlist.i4memory.com/ddr2/

 

[Chicken Patty]

damn I just came across this thread, and I have a feeling this is going to be good.

Hey would you guys want me to post some benches of my Phenom 9950 on two cores? See how it compares to the 7750BE?? Think it should be a nice comparison. Especially since the 7750 is supposed to be a 9850-9950 with two cores disabled...

 

[chaotic_uk]

is not the phenom 9950 clocked at 2.6ghz ? , the 7750BE is clocked at 2.7ghz . but i wonder how they do compair

 

[Chicken Patty]

is not the phenom 9950 clocked at 2.6ghz ? , the 7750BE is clocked at 2.7ghz . but i wonder how they do compair

well its supposed to be based on the 9950, just clocked 100 Mhz higher.

I'll post some benches soon.

 

[cdawall]

mine will be here tomorrow

 

[chaotic_uk]

what temps are every one getting on the stock cooler ? , i am thinking of using my old cpu's hs/f (x2 6000 windor) with the copper heat pipe's

 

[WarEagleAU]

mine will be here wednesday :smug:

neweggs shipping is messed up due to the holidays but CD you got yours in plenty of time. I dont see what the issue is. I believe the proc is coming from Memphis too, which usually gets to me in two days.

 

[cdawall]

mine will be here wednesday :smug:

neweggs shipping is messed up due to the holidays but CD you got yours in plenty of time. I dont see what the issue is. I believe the proc is coming from Memphis too, which usually gets to me in two days.

lol more than a week since i ordered it not bad for 3 day UPS

 

[Chicken Patty]

lol more than a week since i ordered it not bad for 3 day UPS

mine will be here wednesday :smug:

neweggs shipping is messed up due to the holidays but CD you got yours in plenty of time. I dont see what the issue is. I believe the proc is coming from Memphis too, which usually gets to me in two days.

I believe they changed their shipping now to 3-7 days or something like that for free shipping. If i'm not mistaken.

 

[chaotic_uk]

had mine for 6 days and it feels like a month lol