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AMD Phenom II 720 BE or Athlon II X4 640? - Page 2

post #11 of 20
Quote:
Originally Posted by Bobi View Post
How can I tell which stepping is the processor? Is it written on the box or should it be in the PC ?
Im not sure if their is such thing as a c3 stepping 720. searched abit and could not find any. I may be wrong
post #12 of 20
Thread Starter 
Yeah I see it's a C2 stepping . Hmm well I guess I should go for the phenom.. Compared to athlon , which would heat more?
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post #13 of 20
Quote:
Originally Posted by Bobi View Post
Hello!
I'd like to buy a new processor (and a new mobo but thats offtopic) .
The dilemma is either Phenom II 720BE or Athlon II X4 640 .
The phenom is with 3 cores but athlon with 4... I don't really know how to compare them so I need your help!
Please give your honest opinions !
You can get a Phenom II 555 Black edition. Put it in the Asus M4A87TD-evo or M4A88TD-Evo And use the Asus Core unlocker to get four cores. Its really amazing how it works. I pretty much spent 90 Dollars for a Phenom II 955. I love the performance it gives. I can get about 50 fps on Dirt2 my rig with 4 cores instead of 35 with only 2 cores.
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post #14 of 20
Quote:
Originally Posted by lapengu View Post
You can get a Phenom II 555 Black edition. Put it in the Asus M4A87TD-evo or M4A88TD-Evo And use the Asus Core unlocker to get four cores. Its really amazing how it works. I pretty much spent 90 Dollars for a Phenom II 955. I love the performance it gives. I can get about 50 fps on Dirt2 my rig with 4 cores instead of 35 with only 2 cores.
Not all processors unlock, so you can't assume it will just work. Its definitely an option but it may unlock to a tricore, or quad core or it may not unlock at all and your stuck with a dual core.

If it was me though i would prob try a 555 black edition if it doesnt unlock sell it on and try again, and when you get one at least it will be a b3 stepping and should clock very well if you have descent cooling.

Any motherboard with 710 southbridge and above should have core unlocking feature.
post #15 of 20
Thread Starter 
http://www.gigabyte.com/products/pro...px?pid=3010#ov

This is the mobo I want to buy.. Does it have the unlock feature? It's SB750
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post #16 of 20
Quote:
Originally Posted by Bobi View Post
http://www.gigabyte.com/products/pro...px?pid=3010#ov

This is the mobo I want to buy.. Does it have the unlock feature? It's SB750
Yes, it does support core unlocking. Don't set your eyes too much on that, though. Like I've said many times in the forum, unlocking is a hit or miss. You have around a 60% chance of unlocking the remaining core on the Phenom II X3, so I wouldn't bank on that. Instead, you should look at the performance of each at what you're gonna do. If you're gonna be gaming only and not using too many multi-threaded apps like video encoding or 3D rendering, then for now you're better off with the Phenom II X3. Most games that came out from 2009-10 used three cores but not four. Most games coming out this year are taking advantage of quad-cores, so that may be something to keep looking out for. Having L3 cache vs. having none will give you on average a 10% performance boost in games, but that's also around the same boost you get in multi-threaded games from going to a quad-core from a tri-core. The Phenom II X3 is a C2 revision and the Athlon II X4 is a C3 revision, but both over-clock about the same. As for heat and temps, if you plan on doing heavy over-clocking, the Athlon II will consume more power and generate more heat since it's a quad-core.

TL;DR: get the Phenom II X3. Most games that are out now take advantage of three cores, but not four. L3 cache will bring you an advantage of 10% in games, but the extra core won't help in many.

As for the Phenom II X2, completely dismiss it. Almost all recent games take advantage of three cores and if it doesn't unlock you're in for trouble. You'll have lower performance than both the Athlon II X4 and Phenom II X3 by a noticeable margin.
    
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post #17 of 20
This link should help you a little ->
http://www.techpowerup.com/reviews/A..._X4_840/9.html

As you can see 720 BE stock is a good performer ,but there are some games that may prefer core number.
As real unlockable CPU-s are rare to find you can have in mind an Athlon.
Athlons are not quite weak even without that L3 cache ,you should have that in mind.
Unfortunatelly i ve never had this Athlons II to compare them to Phenom II and see if the L3 brings something in advantage.Practically L3 adds latency.

720 BE has the advantage of easier overclockability due to the unlocked multiplier ,but also the IMC is older than the Athlon one.

Use a coin
   
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post #18 of 20
Quote:
Originally Posted by Dromihetes View Post
This link should help you a little ->
http://www.techpowerup.com/reviews/A..._X4_840/9.html

As you can see 720 BE stock is a good performer ,but there are some games that may prefer core number.
As real unlockable CPU-s are rare to find you can have in mind an Athlon.
Athlons are not quite weak even without that L3 cache ,you should have that in mind.
Unfortunatelly i ve never had this Athlons II to compare them to Phenom II and see if the L3 brings something in advantage.Practically L3 adds latency.

720 BE has the advantage of easier overclockability due to the unlocked multiplier ,but also the IMC is older than the Athlon one.

Use a coin
As I already said, L3 cache brings an average 10% advantage in games. Games are just now starting to use four cores instead of three, and that brings an improvement of 10%, but if you got the Athlon II you also lose the L3 cache. The Phenom II X3 is a better choice.
    
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post #19 of 20
Thread Starter 
Reps guys , thanks for the input!
I think i'm going to go with the phenom... I can get it cheaper than the athlon anyways so that kinda narrows it down!
Let's pray for the unlock
Also one more note , the multiplier , what does it do exactly??
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post #20 of 20
Go for the Phenom II.

The multiplier allows easy overclocking, all you do is raise its value and you've got a formidable overclock.
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