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ok if we compare single core from AMD Phenom™ II X6 to a single core from e8400??? - Page 2

post #11 of 29
Quote:
Originally Posted by Princess Garnet View Post
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.

There's more to a CPU than just clock speeds and cores...
The Phenom II is an obvious upgrade.
Edited by Heavy MG - 4/11/11 at 6:36pm
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post #12 of 29
Quote:
Originally Posted by Heavy MG View Post

There's more to a CPU than just clock speeds and cores...
The Phenom II is an obvious upgrade.
Where did I say clock speed was all there was to it? I touched up on the other bits, like IPC. IPC-wise, the Core 2 probably has a slight edge in many cases, but last I checked, they're roughly comparable, so in that regard, I said it's a side-grade at best.

How is it an obvious upgrade if it's not going to perform better yet cost money to obtain, versus what they already have now and will cost nothing? In that regard, it's a downgrade if anything (because it's an unneeded net loss for no performance gain).
post #13 of 29
Quote:
Originally Posted by Princess Garnet View Post
Where did I say clock speed was all there was to it? I touched up on the other bits, like IPC. IPC-wise, the Core 2 probably has a slight edge in many cases, but last I checked, they're roughly comparable, so in that regard, I said it's a side-grade at best.

How is it an obvious upgrade if it's not going to perform better yet cost money to obtain, versus what they already have now and will cost nothing? In that regard, it's a downgrade if anything (because it's an unneeded net loss for no performance gain).
Lol bias more?
Haven't you seen any reviews/comparison tests?
Phenom II compares to the Core i5 and i7 ( for the most part the i7 is a i5 with HT) in some areas.
Not to mention when comparing OC'd Vs. OC'd,most tests don't have the Phenom II's NB overclocked which adds another <10% performance boost.
Edited by Heavy MG - 4/11/11 at 9:30pm
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post #14 of 29
I'm not being bias at all.

Can you link to any tests done which show the Phenom II being faster than the Core 2 clock for clock to the extent that warrants him putting down the money for a new motherboard and CPU? If not, then you should understand what I'm saying.

http://www.nordichardware.com/news-a...ive/19619.html

http://www.anandtech.com/show/2702/4

http://www.anandtech.com/bench/CPU/38

That last one is supposed to be single-threaded performance, but since a 3.5GHz Phenom II X4 just barely loses to a 3.3GHz Phenom II X6, I'm going to presume there's still a small difference being made by more cores? If that's the case, the 3.33GHz Core 2 being faster than both is only more highlighted as having better IPC.

It looks to me like IPC is "roughly similar, but perhaps slightly better on Core 2", which is exactly what I said. I don't know I'm being called bias by stating this as an answer in a thread where the original poster asked about it. I'm not being bias. If anything, I'm being unbiased by telling him not to waste his money on doing a lateral, and instead advising to save for the future.

But hey, maybe you're right. What do I know? Afterall, girls can't overclock, so they probably can't think straight either (I'm joking, don't think I'm mad or accusing you of insinuating that). Maybe he'd be better spending money on a new board, CPU, and RAM (Phenom II) for next to no increase (keeping in mind he's after IPC performance too, not so much more cores), versus a new CPU, board, and RAM (Sandy Bridge or whatever is beyond) for a bigger increase to warrant the money spent. I never would have guessed. Sorry for trying to offer some reasonable advice about a purchasing decision.
Edited by Princess Garnet - 4/12/11 at 12:44am
post #15 of 29
Please do not go Phenom II from C2D, they are very much on par clock for clock. Also it's end of life, you may as well go Sandy bridge or wait for bulldozer.

What's your budget? You would be best to go Sandy bridge. P67 mobo and i5 2500k if you can afford it. If not maybe go for the i5 2300/2400.

This will also give you room to upgrade to Ivy Bridge if you get a P67 mobo.
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post #16 of 29
Quote:
Originally Posted by Princess Garnet View Post
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.
this is right, i still have a core 2 rig as a spare that keeps up fine with most games, until you hit a cpu intensive one, single threaded programs run fine.
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post #17 of 29
i have an amd quad and its alot faster than my mates c2q even at stock. one has the 2.66q the other has the 2.8q. it is an upgrade. also get the 970 quad if you arent going to overclock it
post #18 of 29
Quote:
Originally Posted by Heavy MG View Post
Lol bias more?
Haven't you seen any reviews/comparison tests?
Phenom II compares to the Core i5 and i7 ( for the most part the i7 is a i5 with HT) in some areas.
Not to mention when comparing OC'd Vs. OC'd,most tests don't have the Phenom II's NB overclocked which adds another <10% performance boost.
The Phenom II compares well when compared to the i5 and i7 exclusively because they almost always compare the phenom with more cores to the intel chips.

As far as general speed is concerned, the Phenom II architecture is roughly equivalent with the C2D.
    
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post #19 of 29
Quote:
Originally Posted by Krymore View Post
Oh and the X6 has a 2000 fsb vs the 8400 1333 fsb.
What are you talking about? 2000 FSB your freaking out of your mind. That is HT speed. Which is bandwith speed not FSB. THE cpu base frequency is 200 which is the x4 that speed for the FSB. The true FSB is 800 for all the 64-bit from AMD and for the E8400 is 1333 FSB. Now days when Intel or AMD is talking about FSB it is the bandwith of the FSB.
Edited by dixson01974 - 4/12/11 at 5:14am
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post #20 of 29
Quote:
Originally Posted by dixson01974 View Post
What are you talking about? 2000 FSB your freaking out of your mind. That is HT speed. Which is bandwith speed not FSB. THE cpu base frequency is 200 which is the FSB. The true FSB is 200 for all the 64-bit from AMD and for the E8400 is 333 FSB. Now days when Intel or AMD is talking about FSB it is the bandwith of the FSB.
To add, the CPU-chipset interconnect has nothing to do with performance since there is way more than enough bandwidth.
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