Shuttle SN95g5 + FX55 + GSkill memory = HELP!

[yike99]

Hey everyone.. Just recieved my shuttle, fx55, and 2x 512mb GSkill memory. I am having trouble overclocking this thing. I can get 14x 203mhz 2-2-2-5 no problem and runs perfect. i can get 13 x 213 2-2-2-5 and runs perfect. anything higher wont work. When I run 3dmark05 with settings higher than above it gets halfway through and closes the program or sometimes reboots the computer. vcore = 1.6 vdimm= 2.9 chipset voltage= AUTO, agp voltage= auto. Memory clock= auto (options are 100,133,166) I have tried loosening the timings to 2.5-3-3-7 or 3-3-3-7.

I have a pair of KHX 3000 256mb memory modules (BH-5). Should I give those a shot.

Temps are around 35c
Any ideas or thoughts would be much appreciated

[viccyran]

Hey everyone.. Just recieved my shuttle, fx55, and 2x 512mb GSkill memory. I am having trouble overclocking this thing. I can get 14x 203mhz 2-2-2-5 no problem and runs perfect. i can get 13 x 213 2-2-2-5 and runs perfect. anything higher wont work. When I run 3dmark05 with settings higher than above it gets halfway through and closes the program or sometimes reboots the computer. vcore = 1.6 vdimm= 2.9 chipset voltage= AUTO, agp voltage= auto. Memory clock= auto (options are 100,133,166) I have tried loosening the timings to 2.5-3-3-7 or 3-3-3-7.

I have a pair of KHX 3000 256mb memory modules (BH-5). Should I give those a shot.

Temps are around 35c
Any ideas or thoughts would be much appreciated
Loosen those timings a bit, 2.5-3-3-7 seems to be the norm for 260+ fsb around here, and try from there. If not, you might have a CPU issue :(

GL! :toast:

[CTKP]

Gskill does not like high vdimm, you're running 2.9v, run 2.65/2.7.

[yike99]

I have already tried 2.5-3-3-7 and i cant even get past 203fsb when the multi is at 14.

[=[PULSAR]=]

Try running 15x200 and report back usually when a program like 3dmark quits partially thru a run its more than like the ram.

[Alex08]

well there's a couple things to learn about the sn95g5. set everything a volt higher than its suppose to be.

cpu - 1.6v
ram - 2.8v
chipset - 1.7v
agp - 1.6v

make sure you dont have cool n quiet enabled or uninstall it at least, it screws up the multiplier and causes warm boot problems on these sn95g5's

make sure you lower the LDT/HTT if you're overclocking. for now just set it at 4x if you arent going above 250fsb. if you go past that, then set it to 3x.

[=[PULSAR]=]

What kind of video card are you using? Dont forget your shuttle only has a 230W PSU so I would check the voltages with a multimeter too. 230W PSU is really way to small to overclock a FX55 that high.

[Alex08]

the shuttle psu's can handle just about anything. using a multimeter the rails are solid. 12v @ 12.11 // 5v@ 5.04 // still havent managed to measure the 3.3v line. But anyways this is all under load.

[Stinger]

Alex08--> whats the highest fsb on the SN95G5 that you'v reached?

[Alex08]

310 with clockgen, bios only allows up to 280

310 - with 2x256mb gskill
285 - with 2x512mb pdp xbl

everything with 2.5-3-3 timings and a64 tweaker

[Stinger]

1:1 1t???

[yike99]

I have tried 15x200 and the system turns on but no video. I have to clear the CMOS to get the system working again. I have a 6800gt video card. I have also tried 4x HTT and no go

[Alex08]

yeah 1T 1:1, i don't think i would ever run 2T.


yike - have you tried just lowering the multi down and seeing what max your mem can do at 2.5-3-3?

maybe try something like 10x275 for now. it just may be that the max of your cpu is around 2.8-2.85ghz

[Stinger]

hehe nice to hear I have 1 of thoose comming my way tomorrow

[yike99]

tried 10x 200 system shows no video

[Alex08]

sounds like you're having the warmboot/coldboot problems. if you check out sfftech.com, there's a whole thread on this.

[spacey]

wow you got a nice setup alex :)

i would be exstatic if my sn95g5 3200+ 90nm would run at 2.5 ghz.

i have PQI turbo memory. installation happens tonight... my first shuttle!