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How much would a Q9550 @ 3.7ghz bottleneck 580/590 etc? - Page 2  

post #11 of 28
I think he should.
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post #12 of 28
Thread Starter 
Quote:
Originally Posted by SadSoul;12280810 
Think u should get an I5 at 4ghz at least to get the full framerate potential of the 570.

Believe me, I would love to upgrade to an i7/i5 system and abandon my 775. However, my work shut down a few weeks ago (they never payed my last cheque mad.gif ) so I have no income. On top of that, tuition. No i7 or a new system upgrade for me for at least a few more years.
post #13 of 28
Quote:
Originally Posted by turrican9;12278165 
That CPU should be just fine for a GTX 580. Have a look at my Q9650@4.05GHz 3DMark Vantage score with an overclocked GTX 570

Also, I got almost P6000 in 3DMark11 with that same setup. And look at my Crysis Warhead results

I think that this really shows that atleast gtx 570 is running just fine with Q9650.. because couple of weeks ago i installed one on my friends rig which has i7-950 oc'd to 4.2Ghz + Gtx 570 @ 830Mhz.. the 3dmark scores are pretty much the same.

You'll be fine with oc'd C2Q i guess..
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post #14 of 28
OP. I had a Q9450 and I needed about 3.8ghz to get my 2x 4870's not bottlenecked.

I moved to i7 920 and put it at 3.2ghz and was not bottle necked at all. I then sold my stuff and had a ATi 5870 and the same thing, 3.2ghz didn't bottle neck my setup even though the single 5870 is the same performance as 2x 4870's.

Anywho, yes, the GTX 580 will bottle neck you at 3.8ghz on that chip now a days. It's time to get into the i7's before you get the GTX 580 imo
     
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post #15 of 28
It'll be fine for gaming. I find it rediculous that you need 1.42v for 3.7GHz though. That kind of vcore should be getting you to 4.1-4.2GHz with that chip.
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post #16 of 28
My Q9550 @ 3.9GHz and my GTX @ 850/1025 MHz are the perfect match..

You will not experience any bottleneck in any game from that Q9550 @ 3.7GHz..

CHEERS..
     
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post #17 of 28
Think people are confused with the term bottleneck...

Bottleneck = Cant play the Game CAUSE IT LAGS.

You won't suffer from this you should be able to play any game at the moment and be perfectly fine!
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post #18 of 28
Two things affect the degree (aka frequency and severity) of cpu-bottlenecking on any given set of hardware:

1) The level of cpu-dependency of the test (game/bench) you're running. Loosely defined, this means "How much work does the GPU require of the CPU per frame rendered?". Various applications vary WILDLY in this regard. Not only is every application different, but it's an ever-shifting variable over the course of every test you ever run, and

2) The graphical difficulty level of the test (game/res/settings) relative to the power of the graphics solution. This is because the graphical difficulty (obviously) impacts the FPS at which the test is running, and hence how OFTEN the GPU makes requests for data from the CPU (see #1).

Since FPS is always going to vary, and the cpu-dependency is also always going to vary, depending on what's going on onscreen, the phenomenon of cpu-bottlenecking is a very dynamic situation.

Basically, on *every* frame *ever* rendered on your system, either the CPU or the GPU will be the bottleneck.

The bottom-line all this is, the faster your CPU is relative to your GPU(s), and the higher the level of graphical difficulty, the less frequently it will be the case that the CPU will become the limiting factor to FPS.

There is no 'magic number' afa a clock speed (or even what CPU/architecture), it is more of a continuum, and it's dictated by the physical hardware, and what test you run, and the settings you run that test at.

I consider the cpu/gpu combo you are proposing to be a nice match, however there will occasionally be scenarios where you get a bit lower FPS than someone w/an i7 or SB. For sure, that will happen ... but it shouldn't affect playability ever, really.
Quote:
Originally Posted by Buffal0;12282049 
Think people are confused with the term bottleneck...

Bottleneck = Cant play the Game CAUSE IT LAGS.

You won't suffer from this you should be able to play any game at the moment and be perfectly fine!

That isn't what 'bottleneck' actually means ... You can make up your own definition if you like, but it's not technically accurate.

However, I do agree that by your definition, he won't be bottlenecked thumb.gif
Edited by brettjv - 2/6/11 at 9:41am
    
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post #19 of 28
Thread Starter 
To the people saying my volts are too high to be using at FSB 436, is it really? I just used this guide here: http://www.overclockers.com/forums/showthread.php?t=515316

Says for about 436mhz, 1.4 is perfectly fine.
post #20 of 28
What vid: is your Q9550? Mine is 1.200 and I run 3.9@ 1.27v
    
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