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post #21 of 108
Thread Starter 
The 640 just isn't enough, I've been there. I had a Phenom which I happily drove over 3.5Ghz on 4+1 phase mobo without any heatsink, still wasn't good enough for the 5870, and the 640 has a locked multiplier, there isn't much I can do with it.
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post #22 of 108
Quote:
Originally Posted by Johan45 View Post

I still think that the 6300 is too much for that board and your current CPU has better single thread performance than the Piledriver series. With a decent OC you'd have to get that 6300 up to 5.0 to match it which just isn't going to happen with that Mobo. You'll be lucky to run stock without heat issues. Just My opinion. Happy Putering

Stop spreading false info. A X4 640 is NOT a better performer in any aspect over an an FX-43** or FX-63**, including single core performance. Where are you geting these ideas here?

Just for reference heres a 645 which is an additional 100mhz over his current 640 ... http://www.anandtech.com/bench/product/188?vs=700

20fps difference in WoW and 13fps difference in Starcraft II, both very single core heavy games.... and thats only a fx-4300 not a 6300 which widens the gap overall.

I''ve got a 645 paired with a 6670 in one of my spare rigs and it plays decently. However, for Crysis 3 single player, I'd throw a new gpu in first to be honest then bump up to a 6300 down the road.

I ran an 8120 than an 8350 on a 970 extreme 3 (no oc's though), so a 6300 will be just fine in stock form.
Edited by SoloCamo - 4/23/14 at 4:05pm
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post #23 of 108
Quote:
Originally Posted by farmdve View Post

The 640 is locked, can't be OCed. The FSB multiplier thing is known to cause instability, plus it won't go as high.
You're making the right move in stepping up to the FX, but this is absolutely not true. Increasing the reference clock to overclock locked Athlon II and Phenom II CPU's does not cause instability unless you're using an awful motherboard or let the HT link speed get way out of spec. I reached 3.25 GHz on an X4 620 and 3.6 on a 1035T, both of which run 2.6 at stock, without doing anything unusual. And a lot of others on here did even better.
     
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post #24 of 108
depends on if its a Propus or a Zosma core 640 the Zosma has the possibility of being unlocked to a 6core where as the Propus can not be its probably a Propus but its still worth taking a look at smile.gif
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post #25 of 108
Thread Starter 
Quote:
Originally Posted by ozlay View Post

depends on if its a Propus or a Zosma core 640 the Zosma has the possibility of being unlocked to a 6core where as the Propus can not be its probably a Propus but its still worth taking a look at smile.gif
It's a Propus, I checked today.
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post #26 of 108
I've said it before, I'll say it again here as I think it applies...

CPUs often wind up setting the pace for minimum performance (as measured in FPS).
GPUs set the pace for visual quality.

Almost any relatively modern discrete GPU (VLIW4/VLIW5/GCN/Fermi/Kepler/Maxwell) with 16 ROP's and ~80GB of VRAM bandwidth can play any game at ~50-60+FPS at 1080P, provided the user is willing to turn down settings to accommodate the performance of the GPU. Everything above this performance level, allows higher and higher visual settings and resolution while maintaining good FPS.

On the other hand, not all CPUs can maintain 50-60FPS in every game, no matter what settings are used. The CPU winds up setting the hard limits on how much performance (as measured in FPS) is possible in many game engines. There is often no way to defeat a CPU related performance problem with in-game settings.


I've been meaning to install my old propus on my new motherboard to do some of my own direct comparisons to the FX-6300, but haven't got around to it. My experience with propus definitely pointed to a notably lower IPC/C than phenom II due to the lack of L3, which in the stars architecture, was more meaningful than it is in todays PD chips. (PD has a larger L2, slower L3, and faster memory access than phenom II, all these traits wind up negating a lot of the performance benefits of L3). I'd venture to guesstimate that PD has per-cycle instruction performance in most workloads that is similar to Athlon II, so any benefit from switching to the FX chip would be primarily from however much higher it can be clocked. I replaced my motherboard on the switch from a Propus to the FX-6300, which allowed me to go from a modest ~3.3ghz daily OC to ~4.9ghz daily OC. I have had no reason to want to upgrade the GTX460 768MB, but I also don't play games much. (linux user)

My concern, is that without a motherboard upgrade and HSF upgrade and an overclock, the FX-6300 at "stock" performance may not represent a very meaningful improvement over the 640. Under most gaming workloads you can expect it will run ~3.75ghz turbo speeds, which, if we assume the IPC/C to be similar, will only translate to ~25% better minimum FPS. I'm not sure if that's a big enough upgrade on the CPU side to bother with.

Tough call. Is overclocking even going to be practical to do here? I don't usually advise overclocking rigs for family/friends unless they are interested in performance tuning and want to learn how to maintain it.
     
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post #27 of 108
Thread Starter 
Overclocking is not on the list, it's a 10 year old kid, you can't expect him to check temps. If I buy said components, they will run at stock clocks so they can last longer(at least another 2-3 years without them failing due to OC).

However, if you are truly saying that the 6300 while being clocked 500Mhz higher, has 2 additional cores is slower, or in some cases it is, then it would be a bit stupid.
Edited by farmdve - 4/25/14 at 9:14am
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post #28 of 108
If it were me and updating the CPU with your current motherboard I would look for a good used PhenomII 955 or X6 10XX, something that's clocked in the low to mid 3.x range. They easily can add another 2-300 MHz without upping voltage or heat problems. Or scrap the whole FX idea and go for a new FM2+ set-up.
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post #29 of 108
Get an FX 6300. You can probably pull off 4.4 on stock clocks. My buddy is using this board http://www.asrock.com/mb/overview.asp?Model=970DE3/U3S3&cat=Specifications We have his CPU at 1.4v 4.5ghz and there is no throttling. Throw a fan on the VRMs if worried.

Even though youre not overclocking, might as well bump up the speed for free.


If it was me I would get a decent video card first. Maybe like a used 7870, 660, and any other ones priced around those.
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post #30 of 108
Quote:
Originally Posted by farmdve View Post

However, if you are truly saying that the 6300 while being clocked 500Mhz higher, has 2 additional cores is slower, or in some cases it is, then it would be a bit stupid.

CPU Frequency and # of cores don't really represent performance well.
There is a reason why dual cores today run laps around dual cores from the past, and it's definitely not the GHz/MHz difference. An i7 clocked down to 1600MHz, turbo + HT disabled, and 3 cores disabled turning it into a single-core 1.6GHz CPU will still out perform many 2GHz+ dual cores from years ago.

It's easy to market gigahertz and core count, but truly they're both almost meaningless alone.
With that said, it's safe to assume the exact same CPU running at 4GHz is basically double the performance of it running at 2GHz.
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