Avoid bottlenecks (CPU&Graphics cards shall cost the same)

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joey_w
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Hello everyone!
Firstly sorry for my bad english, and if this topic is misplaced, admins can move it to where it belongs please. I won't be offended ;-)

I'm probably building a decent mAtx PC in the future. So I watched a Newegg Video. The guy said one shall avoid bottlenecks by spending the same amount of $$$ on the CPU as on the graphics card. Now my question is, what to do if I wanna have dual SLI? Because two graphics cards will cost significantly more than a CPU.
The hardware I may buy is:
-Asus Maximus IV Gene-Z/Gen3
-Intel Core i7 2700k
-Dual GTX 560 (Probably Gainward, idk)
-32 GB Corsair RAM
-OCZ Vertex 4 SSD 128 GB
-2x WD Caviar Green 2TB
the rest isn't that important, but e.g. which wattage PSU would you recommend? I was going for a 850W model, but I may spend more on it.

Now the CPU costs 335 CHF in my country, and the tow GTX are 240 CHF each. This price is quite a bit higher than the CPUs cost. So is that Newegg rule of thumb applicable for SLI and CF as well?
Thank you all for any sort of answers! Greetings from cloudy Switzerland :-)

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If you don't want to learn how it works, use Mac
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marijanovic
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I5 2500k & i7 2600k are enough for that kind of an SLI.
Even an Athlon II x4 would be enough.

I didn't know about the Newegg "rule" but it sounds a bit odd (as expected from sellers).
Lets say a more appropriate rule for a gaming PC would be "For each 1 $/€/CHF/Kn/... spent on the CPU you can spend 2 $/€/CHf/Kn/... without to worry about bottlenecking.".

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joey_w
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Thank you for the reply!

Now... the processor and the motherboard come as a kit. My reseller sells kits including a MB and a CPU, those are quite a bit cheaper than the individual products. So if I wanted to buy the 2700k and the Asus Maximus, I'd spend over 40 CHF more than if I bought the kit.

What I want to get at is, that I'd prefer to go for the 2700k. And maybe buy 1 or 2 570s if I have enough dosh. Would those be better balanced, considering performance? Instead of 240 bucks per card I'd have to pay 310 per card which is quite something...

A year ago I made a PC for my friend where we took an Phenom II X4 965, 3.4 GHz and a GTX 550 (single card) which really works fine. But I'd like to have something a little stronger! :-)

marijanovic
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There is no need to go for a SLI setup.
It is better to buy a single card for 300€ than 2 for 150€.

2 cards for 150€ each may be stronger than a single card for 300€, but most certainly they produce more heat, consume more power and have more problems (some games do not profit from SLI).

Why not buy a single AMD Radeon HD 7950, 7970 or a GTX 680?

SLI or Crossfire are good solutions if you use higher resolutions (more than 1920x1080) or multiple monitors.

Single GPU FTW.

joey_w
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marijanovic wrote:There is no need to go for a SLI setup.
It is better to buy a single card for 300€ than 2 for 150€.

2 cards for 150€ each may be stronger than a single card for 300€, but most certainly they produce more heat, consume more power and have more problems (some games do not profit from SLI).

Why not buy a single AMD Radeon HD 7950, 7970 or a GTX 680?

SLI or Crossfire are good solutions if you use higher resolutions (more than 1920x1080) or multiple monitors.

Single GPU FTW.
marijanovic wrote:There is no need to go for a SLI setup.
It is better to buy a single card for 300€ than 2 for 150€.

2 cards for 150€ each may be stronger than a single card for 300€, but most certainly they produce more heat, consume more power and have more problems (some games do not profit from SLI).

Why not buy a single AMD Radeon HD 7950, 7970 or a GTX 680?

SLI or Crossfire are good solutions if you use higher resolutions (more than 1920x1080) or multiple monitors.

Single GPU FTW.

Well: I think now I'll go for a GTX 570. The others seem to be very expensive, huh. Of course a SLI will produce heat and consume power, who wouldn't expect that? I also know airflow as a problem, especially for the lower card.

Actually I was thinking of a dual 24" Monitor setup, or even a Dell 30" thing (which would be very €xp€n$ive though). Considering displays, I'm undecided. But if the graphics card has at least two DVI outputs then it's already ok.

marijanovic
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May I ask what kind of tasks the PC will be doing?
Gaming, video renderring, image processing, multimedia&internet, CAD,...?

2 monitors setup is not suitable for gaming because of the black bars from the monitors just in the middle of the picture. Single monitor or three monitors is good.

joey_w
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It'll be a gaming PC, not too much enthusiast hardware. Photoshop will be used and Indesign. And of course Bluray playback, amd multimedia. (Maybe I'll make a hackintosh since it'll all go into a Powermac G5 Case which I've had lying around for about a year now. But I'll more likely install Mac OS on Virtualbox, as my friend has already done. Seems to be easier.)

I fully agree with you about the 2 monitors not apt for gaming! But I've never thought of that before *shame*. Gonna rethink that

Edit: i'd add virtualization to the list. VMWare will have to do a good job!
xD

tweaty14
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Newegg means only that you shouldnt buy a GTX 570 fx with a intel dual core, that will make the bottleneck, i know a guy who made a gaming pc with i5 2500k with a gtx 590, no bottleneck. what is meant is older mobo and cpu with newer GPU = bottleneck and vice versa.

i5 2500k@4.3ghz PCradeon6970 Gigabyte z68x-ud3h-3hp 2x4gb 1600mhz RAM CM690II

Prophet4NO1
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I'm running a 2600K and two 680's with no bottleneck issues. Both cards run just fine.

Prophet4NO1
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Why are you running 32GB of ram? That is WAY overkill outside HD video editing and CAD work. 8GB is plenty for any gaming rig. More will not make games run any better. With the cost of 8GB DIMMs, I would say save a ton of cash, get a 8GB kit for around $40-50 and put the extra money to a pair of 570's. Wont cover all of it but gets you close.