clockgen question

[Guest juice]

So following the oc guide on hardforum - i flashed my bios to tony's 702-bta2 bios and got all of my settings pretty much how i wanted them (the basics) and booted windows with a 2x htt multiplier - and a 5x fsb multiplier .. ram at 100mhz 1:2 .. and started using clockgen to bump it up a few mhz ever 30 seconds..

 

with 2 copies of prime95 running i seem to be getting huge boosts without any errors or over heating.. how legit are these numbers? would windows ever actually boot with these values?

 

started out at:

 

HTT - 225.06

CPU - 1125.32

MEM - 112.53

 

 

Currently at:

 

HTT - 510.86

CPU - 2554.32

MEM 255.43

 

should i keep going or am i risking my machine?

[Guest juice]

hahha.. im a bit of a tard.. i just realized.. without clicking "set values" i'm not actually applying those values.. damnit..

 

need to start all over.. i knew it seemed too good to be true..

[Guest Gir]

lol, simple mistake

[Guest juice]

ok.. this is more like it.. repeating some of the tests over.. i narrowed down my point of failure to 314.98 - at which point one of the copies of prime95 error'd out.. so i will go with this as my max fsb (htt)

[CPDMF]

Use the guide here. You are not actually going to find the max of anything with your current settings. From where you are now you can either find the max of your CPU by raising the multiplier back to factory or you can find the max of your ram by running it at 1 to 1.. If you don't understand what I mean just yet. Do a little more reading.. The definitive A64 OC guide in this forum is just that and will explain everything very well.

[loc.o]

ok.. this is more like it.. repeating some of the tests over.. i narrowed down my point of failure to 314.98 - at which point one of the copies of prime95 error'd out.. so i will go with this as my max fsb (htt)

 

Try to change your memory timings. I think you should be able to get the max HTT a little higher. For looking max HTT i change:

 

Max async lat: 8ns or 9ns

Read preamable: 6ns or 6.5ns

Drive strength: 3

Drive data strength: 1

[Guest juice]

Try to change your memory timings. I think you should be able to get the max HTT a little higher. For looking max HTT i change:

 

Max async lat: 8ns or 9ns

Read preamable: 6ns or 6.5ns

Drive strength: 3

Drive data strength: 1

 

 

after playing with various settings for the last few hours.. I saw my ram hit a stable point (not full tested yet) of about 281 at 2.5-2-2-8 or 3-3-3-8

 

but to boot into windows I could barely get my cpu to run at 250 with 1:1 and 2.5-2-2-8 and 4x htt multiplier and 10x cpu multiplier..

 

seems like my cpu is the weak link here.. or maybe I need to test it a bit more with the looser timings..

 

if i can get much greater speeds out of my ram would it be worth doing 1:1 @ 9x and go for a higher fsb? or to do 250x10 with ram at 250 as well for a bit tighter timings?

 

there are just so many different options.. what tool should i actually be using to benchmark my overall performance for trying various configs?

[loc.o]

Try the 10 multi @ 250 and 9 with higher mem and HTT and compare the results is a good idea.

 

I like Hexus pifast, Superpi mod and Aquamark to compare because they are short tests. The 3Dmarks are good as well to see how your system does. Prime after that ofcourse for stability.

[Guest juice]

im curious what you would do in a scenario where your ram can overclock a great deal more than your proc.. do you try to maximize the ram by running 1:1 and lowering the multiplier to allow you to run at a higher fsb? or do you think just using the mem at 1:1 with the highest multiplier and lower fsb..

 

also.. in the bios i have 704-2bta there's a 233 and 255 divider.. would it make sense to use one of these with a lower fsb? when the ram clocks well at this higher speed?

[Guest juice]

played around with the settings again and came up with a bit better configuration with some benchmark comparisons..

 

 

278fsb x 9 - auto (htt multi x4) - 200-1:1 3-4-3-10 1T 2.8v - 2.5ghz - 1166 fsb

DHRY-ALU = 21056

WHET-FPU = 7902 MFLOPS

WHETSTONE iSSE2 = 10232 MFLOPS

---

Int x4 = 46894

Float x4 - 51437

---

Int Buff - 6673 mb/s

Float Buff - 6595 mb/s

 

278fsb x 9 - auto (htt multi x3) - 200-1:1 3-4-3-10 1T 2.8v - 2.5ghz - 834 fsb

DHRY-ALU = 21121

WHET-FPU = 7928 MFLOPS

WHETSTONE iSSE2 = 10266 MFLOPS

---

Int x4 = 47184

Float x4 - 51186

---

Int Buff - 6663 mb/s

Float Buff - 6593 mb/s

 

278fsb x 9 - auto (htt multi x3) - 200-1:1 2.5-3-3-8 1T 2.8v - 2.5ghz - 834 fsb

DHRY-ALU = 21120

WHET-FPU = 7928 MFLOPS

WHETSTONE iSSE2 = 10265 MFLOPS

---

Int x4 = 47165

Float x4 - 51193

---

Int Buff - 6747 mb/s

Float Buff - 6664 mb/s

 

281fsb x 9 - auto (htt multi x3) - 200-1:1 2.5-3-3-8 1T 2.8v - 2.5ghz - 834 fsb

DHRY-ALU = 21333

WHET-FPU = 8010 MFLOPS

WHETSTONE iSSE2 = 10371 MFLOPS

---

Int x4 = 47685

Float x4 - 52152

---

Int Buff - 6807 mb/s

Float Buff - 6738 mb/s

 

 

I ended up deciding to go with 278x9 (3x htt multi) 200-1:1 - 2.5-3-3-10 3.0v for 2.5ghz ..

 

do you think its worth trying to get my mem fsb closer to 1k? maybe using a divider to get my tightings tighter?

 

I also found that a lot of times i could run memtest86 successfully which a much higher configuration but booting into windows was next to impossible.. various configs that put me around 2.5ghz is about the best i'm coming up with for stability.. what other settings could i tweak beyond the basic mem settings and cpu fsb to help with booting into windows?

[loc.o]

Afaik there's no need to try to get closer to 1K. You could have a look how it does with LDT x 4, but i dont think youll see any difference. I would have gone for the same one, 278 @ 2,5-3-3.

 

What voltage are you giving the cpu? Could be its having a hard time and could explain the memtest stable but not windows, although it could be memory too.

[Guest juice]

Afaik there's no need to try to get closer to 1K. You could have a look how it does with LDT x 4, but i dont think youll see any difference. I would have gone for the same one, 278 @ 2,5-3-3.

 

What voltage are you giving the cpu? Could be its having a hard time and could explain the memtest stable but not windows, although it could be memory too.

 

i'm at 1.4+110% for the cpu.. my temps are about 29c idle.. maybe 41c load.. I have an si-120 and pannaflo m1a going so there seems to be some good cooling.. my chipset temps seem a bit high peaking out at ~45c..

 

the memory actually seems more stable than the cpu.. with 3-3-3-10 1t timings i can definately push this ram higher..

 

would it be safe to try and kick up the vcore a bit more? or maybe drive delay or statup vcore (currently at start/auto) or does startup vcore only for the initial posting..

 

running 3dmark05 at 1280x1024 with no AA i posted a score of about 4200 .. my card is not overclocked yet.. but from playing around with it before i can bump the core to about 535 and mem to about 605.. its currently at 399/499 and flashed to x850 specs..

 

what settings/setup would you typically use with 3dmark05? there seems to be a lot of options..