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ok if we compare single core from AMD Phenom™ II X6 to a single core from e8400???

post #1 of 29
Thread Starter 
Which one is better as am going to buy the AMD Phenomâ„¢ II X6 but most of the applications i use do not support dual or multiple cpus so if we compare a single core from e8400 to a single core from AMD Phenomâ„¢ II X6 which one is faster?
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post #2 of 29
Basically equal clock for clock. PII might have an edge.

If you want single thread performance the PII x6 is not the right choice. It's a great chip if you want 6 affordable cores, but if you want single thread performance even something like an i3 will be cheaper, faster clock for clock, and can hit 4.5ghz on a stock cooler.
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post #3 of 29
Quote:
Originally Posted by kitt3 View Post
Which one is better as am going to buy the AMD Phenom™ II X6 but most of the applications i use do not support dual or multiple cpus so if we compare a single core from e8400 to a single core from AMD Phenom™ II X6 which one is faster?
Depends on what x6 processor your talking about. The e8400 is a 6M Cache, 3.00 GHz. Each core runs as 3GHz.

Let say you get an AMD Phenom II X6 1090T. Its 3.2GHz with Cache 6MB. Each core runs as 3.2 GHz so each of its cores are slightly faster.

If you want to overclock it the AMD will hand down kill that e8400. All around the X6 is much better even in duel core apps.

Oh and the X6 has a 2000 fsb vs the 8400 1333 fsb.

Thats just my opinion on the matter.
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post #4 of 29
Thread Starter 
Quote:
Originally Posted by Krymore View Post
Depends on what x6 processor your talking about. The e8400 is a 6M Cache, 3.00 GHz. Each core runs as 3GHz.

Let say you get an AMD Phenom II X6 1090T. Its 3.2GHz with Cache 6MB. Each core runs as 3.2 GHz so each of its cores are slightly faster.

If you want to overclock it the AMD will hand down kill that e8400. All around the X6 is much better even in duel core apps.

Oh and the X6 has a 2000 fsb vs the 8400 1333 fsb.

Thats just my opinion on the matter.
wow ok so 2000fsb i assume it means faster than 1333 fsb. Man i guess i should look for an amd cpu that has high Ghz? as for overclocking i wont do any overclocking.
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post #5 of 29
Quote:
Originally Posted by Krymore View Post
Depends on what x6 processor your talking about. The e8400 is a 6M Cache, 3.00 GHz. Each core runs as 3GHz.

Let say you get an AMD Phenom II X6 1090T. Its 3.2GHz with Cache 6MB. Each core runs as 3.2 GHz so each of its cores are slightly faster.

If you want to overclock it the AMD will hand down kill that e8400. All around the X6 is much better even in duel core apps.

Oh and the X6 has a 2000 fsb vs the 8400 1333 fsb.

Thats just my opinion on the matter.
The FSB speed is not comparable between the different architectures.

Also, just because the clock speed is faster doesn't mean the CPU is faster. See: Pentium 4.

If you have single and dual-threaded apps usually and just the occasional quad-threaded, get an X4. The X4 965 has the fastest base clock (since you're not overclocking) and is cheaper. http://www.newegg.com/Product/Produc...-727-_-Product

Or you can get an X2: http://www.newegg.com/Product/Produc...82E16819103912

Note: The 955 and 555 will be cheaper than the 965 and 565, and you can overclock them to the same speeds as the more expensive processors by changing a single value in the BIOS
Edited by Concorde105 - 4/11/11 at 5:42pm
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post #6 of 29
Thread Starter 
Quote:
Originally Posted by Concorde105 View Post
The FSB speed is not comparable between the different architectures.

Also, just because the clock speed is faster doesn't mean the CPU is faster. See: Pentium 4.

If you have single and dual-threaded apps usually, get an X4. The X4 965 has the fastest base clock (since you're not overclocking) and is cheaper. http://www.newegg.com/Product/Produc...-727-_-Product
yeah ok but x4 it has high clock base but its only minimal increase i dunno now am so confused. what should i do?
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post #7 of 29
Quote:
Originally Posted by kitt3 View Post
wow ok so 2000fsb i assume it means faster than 1333 fsb. Man i guess i should look for an amd cpu that has high Ghz? as for overclocking i wont do any overclocking.
Even if you wont overclock a AMD cpu,it is good to OC the northbridge (NB) for better performance.
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post #8 of 29
Quote:
Originally Posted by kitt3 View Post
yeah ok but x4 it has high clock base but its only minimal increase i dunno now am so confused. what should i do?
Well... What's your budget?

You should go with the 945 if you don't need that much power and are on a budget.
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post #9 of 29
http://www.anandtech.com/bench/CPU/2

you could check under 3d rendering, cinebench have multi and single threaded charts.

for single threaded applications i would pick the faster architecture first, then clocks and finally core count.
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post #10 of 29
I imagine in most instances, it'd probably be similar at stock speeds. If anything, I wouldn't be too hesitant to say the Core 2 Wolfdale has a slight better IPC performance.

Whoever said the AMD would "hands down kill the other" if you'd overclock them has it wrong. I routinely see almost all E8x00s at 4.0GHz and above but Phenom IIs aren't uncommon at all in the 3.xGHz range.

If you don't need more cores than the Core 2 Duo E8400 has, going to any Phenom II is a side-grade at absolute best. Since you already have the Core 2, you'd be better sticking with it. If you ask anyone who went from a Wolfdale Core 2 to a Phenom II (X4), I imagine they'd say there was some regret.

Save your money and do it right. Get more threads/cores AND more performance per core, namely, Sandy Bridge or beyond. If you do need more cores, a Core 2 Quad is still a better choice as you wouldn't need a new motherboard and it'd likely be cheaper.

In other words, either way you look at it, I don't see much of a reason to go from a Core 2 to Phenom II right now unless you get it very cheap.
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