best perf. with 939 and DDR400

[sKiTz0]

I hate asking such basic questions, but I just don't have the time I used to when I first joined XS :shrug:

So I'm wondering... whats the best performing 939 chip? Is it worth paying to go to an opteron? What about the 4600x2? it seems to be at quite a premium.

[dario03]

I would try to get something with a high multi. I have had 2 amd skt939 chips and both were held back by my motherboards 280fsb limit.

280x9 for my amd64 3000+
280x10 for my my amdx2 3800

And I ran both with a stock fan so I'm sure the chips themselves could of gone higher.

[EniGmA1987]

Ya you definitely need at least a 10x multi on your CPU. My Opty 165 is being held back becuase of my motherboards 333fsb limit. If I put max voltage into everywhere on the MB I can sometimes get it to boot at 345 fsb so I know my CPU can go farther, but these old MBs just cant go very high. I would recommend a 5200+ or something like that if you can find one still for 939. Or you could try and buy an Opty 175 or something off of ebay for new. You cna probably find one there. Be sure to get a known good stepping if at all possible.

[sKiTz0]

Ya you definitely need at least a 10x multi on your CPU. My Opty 165 is being held back becuase of my motherboards 333fsb limit. If I put max voltage into everywhere on the MB I can sometimes get it to boot at 345 fsb so I know my CPU can go farther, but these old MBs just cant go very high. I would recommend a 5200+ or something like that if you can find one still for 939. Or you could try and buy an Opty 175 or something off of ebay for new. You cna probably find one there. Be sure to get a known good stepping if at all possible.

the fastest 939 x2 i can find is a 4200+, i think 4600+ was made but it's rare.

[neo2005th]

Opteron 185, FX60, A64 5000+ are the best chips in 939.

The FX series have multiplier unlocked but are very expensive :)

[AliG]

a64 5000+ What have you been smoking? There's an athlon 64 4000 at 2.4ghz and I belive there used to be a 2.6ghz one for a while until the 1mb cache was released or something along those lines, but the opty 185 is probably the only one you'll be able to find anyways

[neo2005th]

a64 5000+ What have you been smoking? There's an athlon 64 4000 at 2.4ghz and I belive there used to be a 2.6ghz one for a while until the 1mb cache was released or something along those lines, but the opty 185 is probably the only one you'll be able to find anyways
Srry the A64 X2 4800+ Toledo is the last.

The athlon 64 4000 at 2.4ghz is single core.

[EniGmA1987]

I would still say to go with a high multiplier that has 1MB of L2 cache though, which basically means an opteron. Try getting a 170 or 180, they have even multipliers which will allow you to run your RAM at its full speed instead of downgrading the speed. Here are some prices on Opty 170s...


http://cgi.ebay.com/Opteron-170-2-0ghz-dual-core-2mb-939-X2-4400-WorldWide_W0QQitemZ260179786949QQihZ016QQcategoryZ 80142QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

http://cgi.ebay.com/AMD-Opteron-Dual-Core-170-2-0ghz-2MB-socket-939-CPU-NR_W0QQitemZ250185177108QQihZ015QQcategoryZ80139QQ ssPageNameZWDVWQQrdZ1QQcmdZViewItem

http://cgi.ebay.com/AMD-OPTERON-170-64-BIT-DUAL-CORE-PROCESSOR_W0QQitemZ130173169974QQihZ003QQcategoryZ 80142QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

http://cgi.ebay.com/AMD-OPTERON-170-A8N32-DELUXE-GAMING-BOARD-MEMORY_W0QQitemZ290180747354QQihZ019QQcategoryZ162 QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

[Cheffy]

you looking for an opty 185 or an FX60 then. both ran 2.6ghx stock, next up are the 4800+ and the opty 180, then the 4400+ / opty 175, then opty 170 then 165.

as for ddr400 ram, you want early infinium based sticks (2-2-3-5 timings @ 400 and 3-2-3-6 at 250 ish?) 5B-D (if your brave, 2-2-2-5 @ 200, upto 3-3-3-8 300mhz) or 5B-F (2-2-2-6 if your lucky at 200, upto ~275 3-3-3-8 with good sticks)

unless you go 512mb sticks, then its BH5 or TCCD or 5B-G for 2-2-2-5@250+ or 2.5-4-4-8 @ 300 or 2.5-2-2-6 @ upto 250 with luck or >300@3-3-3-8

[hyc]

I've been using an Opteron 185 with 4x1GB registered ECC DDR400 DIMMs. I was using this memory with an X2 3800+ before. The Opteron 185 is not well-supported by the BIOS on my motherboard; C'n'Q is not enabled, and the memory clock always gets set to DDR333. (Even though the memory itself worked fine at DDR400 with the X2 3800+.) I've used runtime tweaks on my Linux system to get around these issues. (You can use setpci on Linux to set the memory controller registers directly. Note that raising the memclock from 166 to 200MHz only worked for me while the CPU was at its lowest speed. Setting it while the CPU was at 2.6GHz always crashed. But after the clock has been changed, the CPU works at all speeds.)

[freakBYnature]

Opteron 185, FX60, A64 5000+ are the best chips in 939.

The FX series have multiplier unlocked but are very expensive :)

It's not even worth it with an FX, the opterons are just as good. The thing said about FX is also that the best memory controllers are used, but I think you should look long for a opteron that has got a really BAD memcontroller.

EDIT: And agreed, look for atleast multi 10x, which in the dualcores starts at 3800+ x2 and Opteron 170. I'm using an 170 now @ 2.75 GHz and have had my old (now KILLED by my fingers) 3800+ x2 also did 2.7 GHz 24/7, so but under 10x is comes up to you mobo what it can do or not.

[STEvil]

you looking for an opty 185 or an FX60 then. both ran 2.6ghx stock, next up are the 4800+ and the opty 180, then the 4400+ / opty 175, then opty 170 then 165.

as for ddr400 ram, you want early infinium based sticks (2-2-3-5 timings @ 400 and 3-2-3-6 at 250 ish?) 5B-D (if your brave, 2-2-2-5 @ 200, upto 3-3-3-8 300mhz) or 5B-F (2-2-2-6 if your lucky at 200, upto ~275 3-3-3-8 with good sticks)

unless you go 512mb sticks, then its BH5 or TCCD or 5B-G for 2-2-2-5@250+ or 2.5-4-4-8 @ 300 or 2.5-2-2-6 @ upto 250 with luck or >300@3-3-3-8


Micron made 5B series (fragile over stock volts), Infineon made BE/CE - 5/6 series.

Infineons are my favorite. Up to 270mhz at 2.5-3-2-6 (cas-trcd-trp-tras) with 2.75v max. Average 250ish. Over 250 may result in 3D instabilities without sub-timing tweaks.