3800+x2 socket 939 OC, manchester

[Ninkobwi]

hey I was messing around with this Athlon OC calc program, and I was wondering if anyone has tried these settings:

FSB: 333mhz
CPU Mult x9
HT 3x
RAM Freq 120mhz.

this should equal roughly a 3ghz clock, HTT bus of 999 and a ram speed of 200mhz. - can the processor handle such a high FSB (On air, typhoon)?

also- if you run the CPU Multiplier really low (say 6 or so) and HT really low (2.5), is it generally safe to have a 400mhz bus? all the while keeping your ram at 200 and your HTT at ~1000.

[randomperson21]

im pretty sure the x2 manchesters are locked at a 10x multiplier. only the fx series has an unlocked multi. so the cpu multi of 9x won't work.
Also, the most people have been able to eke out of a decent manchester 3800+ is roughly 2.7ghz on air, a bit higher on water. you have to be a pretty good overclocker and have a good cooling system (much better than air) to run @ 3ghz.

[i_am_mustang_man]

you can't go higher than a 10x multi, but your board should be a ble to lower it no prob

the fx series is unlocked in that it can go up to 20+ usually

sempron multis are locked

but back to the original question

if you're fsb can hit it, that's the only limiting factor (other than your cpu of course)
if you can hit 300fsb x10, put your ram at 4/6, and you are all set, right? why would you need any different?

[randomperson21]

you can't go higher than a 10x multi, but your board should be a ble to lower it no prob


hrm. then my mobo might just be retarded. which isn't impossible, its an ecs.

good luck!

[Namslas90]

AMD 3800 X2 manchester's multiplier is not locked at 10 it can be lowered (to as low as 4), but you need the fx to go higher than 10.

[Ninkobwi]

if you're fsb can hit it, that's the only limiting factor (other than your cpu of course)
if you can hit 300fsb x10, put your ram at 4/6, and you are all set, right? why would you need any different?

well at 300 fsb x10, and a HT of 4 that puts HT link at 1200. from what I've been reading, it is best to keep it close to 1000. lower HT to 3 and you're underclocking by 100mhz.

the only reason I ask about the 6x multiplier is just for curiosity's sake. I mean does it matter how you get to your mhz benchmarks as long as you get to them? I guess I'll have to test it out. I guess stability could be an issue at the lower multipliers- but so far for me everything has been gravy.

[Namslas90]

Sorry just realized I didn't answer your question. I have had my 3800X2 up to 2.7 on air cooling without issue. However I have a 120mm intake, 80mm exhast, 40mm memory cooler, 30mm northbridge, and a typhoon, not to mention the X1900XTX fan all on full speed all the time.

[AthlonX2]

i have never tried those setting, i dont think i can hit 333fsb on my current motherboard

[Easy Rhino]

i also have the manchester cpu and it runs great. im only stock cooling it so i conservatively overclocked to 2.2ghz. i will defin get a top notch fan so i can hit 2.6-2.7.

whats safe temperature range for this cpu?

[Ninkobwi]

safe temp should be sub 50C at full load. I try to keep mine below 40 just for longevity's sake. 2500mhz is so easy to get its unreal, without stressing your system one bit.

[Azn Tr14dZ]

I believe the safe temps for Athlon 64's is 65 Degrees (AMD's site shows I think), but it's best to keep it under 55, or 50 even.

[Easy Rhino]

im running into problems. i just got a nice aftermarket cooler. the thermaltake venus 12. it cools about 7-8 degrees lower than stock on idle and on load it does quite well. problem tho that i cant get this cpu beyond 2.5 ghz without crashing. ive upped voltage steadily and still no go! anyone with this processor how much voltage you given it? ive got a 700 watt OCZ gamexstream psu powering the x1800xt as well. any ideas?:banghead:

[Ninkobwi]

im running into problems. i just got a nice aftermarket cooler. the thermaltake venus 12. it cools about 7-8 degrees lower than stock on idle and on load it does quite well. problem tho that i cant get this cpu beyond 2.5 ghz without crashing. ive upped voltage steadily and still no go! anyone with this processor how much voltage you given it? ive got a 700 watt OCZ gamexstream psu powering the x1800xt as well. any ideas?:banghead:

you could try it at 9x multiplier and a 300mhz fsb..thats kinda high I think but should get you 2700 mhz. only downside is that you'll lose 100mhz in your HT (dont forget to turn it to 3x) and adjust ram values accordingly.

[randomperson21]

im running into problems. i just got a nice aftermarket cooler. the thermaltake venus 12. it cools about 7-8 degrees lower than stock on idle and on load it does quite well. problem tho that i cant get this cpu beyond 2.5 ghz without crashing. ive upped voltage steadily and still no go! anyone with this processor how much voltage you given it? ive got a 700 watt OCZ gamexstream psu powering the x1800xt as well. any ideas?:banghead:

you haven't given too many details as to what you have done, so i'm going to ask a bunch of stupid questions.

1. can your ram handle the fsb? are your running a divider?
2. PCI bus lock? PCIE bus lock?
3. Can you boot into windows at all?

[Easy Rhino]

you haven't given too many details as to what you have done, so i'm going to ask a bunch of stupid questions.

1. can your ram handle the fsb? are your running a divider?
2. PCI bus lock? PCIE bus lock?
3. Can you boot into windows at all?

those are good questions, im just stupid for not giving the details.

1. its pc3200 no im not sure. ddr400 the standard for this motherboard
2. im upping the pci bus clock which is set at 200 and i overclock by upping that setting.
(note: i have also upped the pcie clock to 105. not a big change but it has helped a lot)
3. no, after i set it to 2.25ghz using 10x multiplier it wont even post!
(note: my last post i said i couldnt get above 2.5, i meant 2.25! i was tired :ohwell: )

[randomperson21]

those are good questions, im just stupid for not giving the details.

1. its pc3200 no im not sure. ddr400 the standard for this motherboard
2. im upping the pci bus clock which is set at 200 and i overclock by upping that setting.
(note: i have also upped the pcie clock to 105. not a big change but it has helped a lot)
3. no, after i set it to 2.25ghz using 10x multiplier it wont even post!
(note: my last post i said i couldnt get above 2.5, i meant 2.25! i was tired :ohwell: )

i'm going to assume that your ram isn't running on a divider, and its running at dual channel, so its running at 450mhz instead of its standard 400mhz. which could be a problem if you have cheap ram.
i know your manchester can at least hit 2.25, if not 2.4, 2.7. its most likely a problem with some other component in your system.

Try this: undo the overclock, set everything to its default setting, and see if you can boot. that is, if you can get into bios. if not, clear cmos
if you can, clock down your memory using a mem divider, lock the pci and pcie busses, and then slowly start raising the fsb a few mhz at a time. after each fsb change, check to see if your computer will boot up. make sure the speed for your ram never surpasses much over 400mhz, if it does, set a higher divider. that should work better for you

[Easy Rhino]

i'm going to assume that your ram isn't running on a divider, and its running at dual channel, so its running at 450mhz instead of its standard 400mhz. which could be a problem if you have cheap ram.
i know your manchester can at least hit 2.25, if not 2.4, 2.7. its most likely a problem with some other component in your system.

Try this: undo the overclock, set everything to its default setting, and see if you can boot. that is, if you can get into bios. if not, clear cmos
if you can, clock down your memory using a mem divider, lock the pci and pcie busses, and then slowly start raising the fsb a few mhz at a time. after each fsb change, check to see if your computer will boot up. make sure the speed for your ram never surpasses much over 400mhz, if it does, set a higher divider. that should work better for you

yea ive got dual channel memory. didnt know that was inferior when i bought it? does that severely limit my ability to overclock my cpu ?

on another note, im using the abit at8 rd580 chipset. the only things i can see to change in bios is the multiplier, clock, and pcie clock. so cpu frequency = the multi X clock. i dont see anywhere to change HTT ??:eek:

i can mess around with the dram settings though. i just dont know what im doing.

[regan1985]

i overclock myfriends yesterday for him who has the same board as me and at 1.44v i got it up2 2.55 and he is using some old 1g pc2700 , have u lowered all your ram timmings set it to 100mhz and lowered your fsb from 1000 to 600?

[randomperson21]

i'm at school right now, so i don't have a ton of time to explain stuff. i'll try to do that when i get home.

theres tons of great a64 overclocking threads here at tpu, i'd check them out. just search for a64 overclocking.

[Easy Rhino]

i'm at school right now, so i don't have a ton of time to explain stuff. i'll try to do that when i get home.

theres tons of great a64 overclocking threads here at tpu, i'd check them out. just search for a64 overclocking.

so i cant adjust the HT multiplier but i can change the setting from auto/1ghz/800/600/400

lowering it to 800 doesnt help. anything above 225 at 10x blows the system.