Legit Reviews

Well I still cannot pass 2.6 ghz when I try to turn on my comp it says there is a file missing(which it really isn't). Mulitplier is at x11 and FSB is at 240. I am using OCZ RAM PC 3200 timings are 2-3-2-6(not sure what the timings really mean). And my Cpu is at 1.64 volts and i dont wanna really over do it. Help me please!


http://img379.imageshack.us/my.php?image=cpuz8uq.jpg

oh yea im using a DFI LP-UF4-D

do you have the HTT set to x5?

HTT?? wat do you mean?

On AMD systems you have an HTT and LDT multiplier that need to be lowered when overclocking.

200Mhz x 5-LDT = 1000Mhz HT 2000Mts (million transfers a second)
200MHz x 4-LDT = 800MHz and so on...

If you are running 240 x 5 that is putting your HT at 1200MHz, which some CPU's & boards don't like.

HTT - (Hyper Transport Technology) AMD's new style of FSB that directly communicates with the memory controller and Hyper Transport Controller on the CPU die itself, because of this integration of the ‘Memory Controller’ AMD now has a dedicated BUS for the memory to communicate on. This now means it doesn’t have to fight for bandwidth against the other BUS's (AGP/PCI, SATA etc), and that is why AMD 64's are more hungry for lower latencies rather then more bandwidth. AMD still have an FSB for the communication from the chipset to the CPU but this is the Hyper Transport, and is used for the other BUS's to communicate on (AGP, PCI, PCI-e, SATA, IDE etc). Intel had quad pumped the FSB to eventually reach 800FSB but AMD have used their Hyper Transport and LDT multiplier to reach 800Mhz and 1000Mhz HT, which is the same thing as 800FSB and 1066FSB-(for the P4 Extreme Edition) except it did not have the memory communicating on the same BUS as well.

well my motherboard can support up to 2000 MT's thats all i know.

What do you suggest I do change my LDT and my LDT voltage??

Okay I just checked and its currently on auto.

then your going to need to change it to 4x, auto most likly sets it at 5x

For overclocking that CPU that far, I'd recommend dropping the HTT to x3. I would also set the Startup and Special Voltage to 1.425, and the Special VID to 110%. I have found those to be the best voltage settings across a number of settings. Start there and we'll work at it

bloodwolf808,

Like the above two posts stated you need to take that setting off auto and adjust the multiplier. Try it at 3x and see if it is stable. If it is you can try moving it up to 4x at a later point in time.

Since you had that setting on Auto you might want to make sure you got the right voltages on the memory also. Crank up the voltage to 2.8-2.85 if you are using good name brand memory (If you are running Mushkin Redline or OCZ VX then go 3.2V)

what divider are you using? Also before you get tunnel vision on the pre set number make sure its stable as you go up. Start off from the default speeds and work your way up using memtest then if it passes go and run prime95 for a few hours (overnight). My specs are below and I got mine up to 2.7 but didnt see ANY gain in benchmarks, actually went down in 3dmark05. My "sweet spot" as some call it rests at 2430mhz 9x270 (ram @ 2-3-2-7 3.1v)Every component gets different results, regardless if 2 systems have the same setup their o/c will vary. Im sure I can do better but I just dont have the time (deployed still).

Anyway, hows everyone been? Long time no visit. Should be getting some R&R soon, but hope to be home not too long after the big ball drops...

My new toy
Thermaltake VA8000SWA
Antec Neopower480 (2.0)
DFI lanparty nf4 ultra-d
A64 3000+ Venice xp-90 Aluminum w/ silentcat
1gig OCZ Platinum rev 2
MSI 7800GTX (o/c 485/1.27)
2x 80gig Barracudas (wanting my raptors back )

I don't use Prime 95 or recommend it. I think its a crap program. Run memtest, Super Pi to 32M, and play some games, etc. All systems are different, as Grunt said, take some time, start slowly and work your way up. While some may hit 2.7-2.8 no problem, you may top out slightly lower.....you just have to find the sweet spot yourself....but we will help you all we can.

Well i DO use prime95 and recomend it, run it with large FFT for 12-24hrs and set its priority to high or realtime in the taskmannager. If it passes this then its stable.

infinitevalence wrote:Well i DO use prime95 and recomend it, run it with large FFT for 12-24hrs and set its priority to high or realtime in the taskmannager. If it passes this then its stable.

Yeah, Prime is great, I prefer the blend test though.

BTW, auto works fine for the LDT multiplier on the DFI boards, it makes the multiplier automatically (what a surprise) adjust based on what the HTT is.

infinitevalence wrote:Well i DO use prime95 and recomend it, run it with large FFT for 12-24hrs and set its priority to high or realtime in the taskmannager. If it passes this then its stable.

Well, to each their own. I've just seen too many instances where it throws errors right away, or after several hours, on an otherwise perfectly stable system.
I am also seeing a lot of people using Winchester core CPUs having issues with it....not exclusively, but more than other processors. there also seems to be some argument that every processor throws errors, its just a matter of when during testing.

not in an attempt to start a flame war, but if its throughing errors doesent that mean its not stable?

A lot of people have brought up issues with Prime 95 and it having certain internal issues that "throw" errors, when it shouldn't. . You'll find as many people hate the program as like/use it. You'll also see where Prime will run perfectly for days on end, then the user tries to play a game or run other benchmarks, only to have their system crash. I don't believe theres a 100% perfect program for anything....I'm just not a big believer in Prime95

Thank you everyone so far im am testing it. I didnt have alot of time to test it but now I do.

For some reason i cannot get to 250 FSB to boot up. My multiplier is currently at 11x. Im still not sure why its not working I even got the voltage up to 1.7 which is the max I will go. Is there a certain RAM timings i should use(Im currently at 2-3-2-6 OCZ 512x2 dual channel).

HTT=x3
Multiplier=x11
LDT voltage=auto
Max FSB I got to boot=240
cpu voltage=1.7v