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754 vs 939 pin AMD64 processors
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Pavel
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Posted : Feb 18, 2005 15:29
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Hello wise people. Can somebody explain me please what is the difference between those 2 technologies that AMD uses for their AMD64 processors? Is there any fundamental difference between AMD Athlon 64 3200+ 754 Pin and AMD Athlon 64 3200+ 939 Pin? They cost the same, though the 754 Pin version has twice as Cache memory (1Gb instead of 512Mb)
Will be glad to hear opinions 
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fregle
IsraTrance Junior Member
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Posted : Feb 18, 2005 15:41
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oh man... if they cost the sam, have the same speed, but the cache is much higher, then i would know what to choose  but i'm not sure... probably there are some architectural differences, and i think the 939's are much more performant because of they're architecture... By the numbers the 754 wins because of the doubled cache (fastest memory inside your computer... Loads commands to be sent to the registers, the bigger the cache, the better, because your cpu will need your ram less often, and ram is muuuuuuch slower then cache)
but speed and cache aren't everything i already talked about architecture, and prolly the 939's are the best performers... because hey cost the same while the 939 has half the cache... I'd take the 939... |
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PoM
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Posted : Feb 18, 2005 15:53
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939 are more evolutive in the futur,pci express and other things ... 754 ll dont have lot of evolutions .
if i m right 754 have better performance cause of their cpu speed .for example amd 64 3400 (754)> 3500 (939) and 3400(754) 1024 cache juste cause the cpu frequency is higher . |
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fregle
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Posted : Feb 18, 2005 15:59
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now, u don't add cache becuase the speed is higher.. the pentium xeon (who were really slow compared to this, not even 1Ghz) already had this amount of cache... and because of the high amount of cache they were the best performing chips in they're speed-category...
and SPEED IS JUST ONE PART OF THE REAL PERFORMANCE... just like i said in my previous post.... and after i read PoM's post, i'm really sure that the 939 cpu's with the same speed as the 754 cpu's will be more performant... the sellers want u to believe that the speed is everything, but it doesn't say shit about the quality of a chip... |
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PoM
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Posted : Feb 18, 2005 16:04
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maybe you right fregle , i m not a expert , but from test and benchamrk of the amd 64 the speed of the cpu make the difference not the cache, maybe not in all aplications ,but in general.if you are planning to buy a new cpu becareffull cause there are some amd cheaper and better than some expensive. |
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Pavel
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Posted : Feb 18, 2005 16:09
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Quote:
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On 2005-02-18 15:53, PoM wrote:
939 are more evolutive in the futur,pci express and other things ... 754 ll dont have lot of evolutions .
if i m right 754 have better performance cause of their cpu speed .for example amd 64 3400 (754)> 3500 (939) and 3400(754) 1024 cache juste cause the cpu frequency is higher .
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I can't see how CPU architecture will affect future technologies like PCI Express. Isn't it Mother Board's aim to make sure all the devices are fully finctioning?
Anyways thanx for the advices, keep em coming.
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PoM
IsraTrance Full Member
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Posted : Feb 18, 2005 16:13
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yes i mean the 939 architecture ll be more evolutive but who wnant a evolutive computer?
better to buy the top cpu ,mobo and ram and buy all again 2 years later i think |
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john_c
IsraTrance Junior Member
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Posted : Feb 22, 2005 20:05
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john_c
IsraTrance Junior Member
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Posted : Feb 23, 2005 00:22
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not 1 reply? |
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SpockteR
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Posted : Feb 23, 2005 01:08
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AMD Athlon 64 3500+ has better FSB - 1000Mhz instead of 800 ... I remarked on my Intel-Machines that this has a good impact on audio... and 2 instead of 1 memory channel, this will help, too.
On the other hand the difference of -0.2 GHZ is not good. .. 
If you insist on cutting edge-performance, you should take a 939, but maybe wait  1,2 months and buy the AMD Athlon 64 4000+ or FX-55, for about the same price as you pay today for the 3500+...
If you really need it now and if it would be a pity to spend that more on the 939-Socket, then go for the AMD Athlon 64 3400+.
Cubase will work finer than on my best machine 
t = (3/(8*G*Pi*rho))^(1/2) where 'rho' is the density of the universe and 't' is its size. |
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Trip-
IsraTrance Team
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Posted : Feb 23, 2005 09:17
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The biggest difference between 939 and 754 is afaik the 128bit dual channel memory bus.
Crackling universes dive into their own neverending crackle...
AgalactiA |
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john_c
IsraTrance Junior Member
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Posted : Feb 23, 2005 18:12
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Right, how much will the dual channel memory bus improve performance when running VSTs? Is it worth the extra $? |
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XrTC
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Posted : Feb 23, 2005 20:17
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Quote:
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On 2005-02-18 16:09, Pavel wrote:
Quote:
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On 2005-02-18 15:53, PoM wrote:
939 are more evolutive in the futur,pci express and other things ... 754 ll dont have lot of evolutions .
if i m right 754 have better performance cause of their cpu speed .for example amd 64 3400 (754)> 3500 (939) and 3400(754) 1024 cache juste cause the cpu frequency is higher .
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I can't see how CPU architecture will affect future technologies like PCI Express. Isn't it Mother Board's aim to make sure all the devices are fully finctioning?
Anyways thanx for the advices, keep em coming.
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Pavel, the connection between the two is that u need a '939-pin' motherboard in order to have PCI-Express.
as about the speed, 939-pin Athlons can take advantage of the Dual-Channel memory. according to AMD, what seems as a 'loss' in cache or CPU speed (in GHz) is made up for with the use of RAM in Dual-Channel.
so, a system with 3200+ (754) CPU and 1GB RAM (single channel) will be slower than a system with 3200+ (939) CPU and 1GB RAM (in dual channel: 2x512MB). 
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TRANCER
IsraTrance Junior Member
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Posted : Feb 23, 2005 20:31
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very much right Xrtc |
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Pavel
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Posted : Feb 23, 2005 21:19
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Thanx for the info mates.
Is there any source with all the info regarding the latest changes?
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