If I Overclock an i5 750 to >4GHz do you think it will compare with a modern i7?

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Ali Husain

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Hi,
I am building a gaming rig and I want to get a processor from a LONG time ago, and apparently the graphic card I want to get (R9290 Vapor X) will be bottlenecked by this processor (i5 750), and I was wondering if I OC'd it to above 4 GHz (Apparently it is possible to get it to 4.7 GHz)
If you think it is possible to overclock it to this speed please inform me on how to do it, and if you think I will get the results I am looking for (speeds around the i7 area) please inform me as well.
I am not really worried about heat or power, because I am also getting a 650 watt platinum PSU (extremely high power efficiency) and a Corsair H75 hydro cooler, I don't want to get a different CPU because this is one is quite cheap and I am almost certain that this one can achieve the speeds I need - the only doubt I had is that people tell me that it will bottleneck.

Thanks very much

Ali
 
Solution
oinkypig
realistically the cpu speeds of everything except z170 socket is only 25% faster than the 1st gen i7 45nm nehalem processors that came out in 2008 when its compared to the 4790k .A max 4.5ghz 920 is 25% slower than the 4.5ghz 4770k. 2600k=3770k=4770k performance only clock per clock.
YES A 25% DIFFERENCE starts seeming closer to 10% 2st gen vs stock 5th gen. An i5 750 >4.5ghz i5 750 will equal 3.5ghz on i7s 4690k in CPU benchmarking. cne11.5/15 and pcmark 7. Its too much to upgrade until seeing skylake 10 core cpu that show up online drop in price.
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viewtyjoe

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Even if you get a stable 4.7 GHz on it, I doubt that you're going to get performance comparable to a modern i7. You may see performance relatively close to a newer i5. I am not personally knowledgeable on overclocking older Intel processors, so I cannot provide that information, unfortunately.
 
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Ali Husain

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Thanks very much for the help, greatly appreciate! I think maybe I'll try a different processor

 
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Ali Husain

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Thanks for the help I will check it out, but do you think it will still be able to fight with a modern i5??
 
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oinkypig

oinkypig

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in terms of performance the i3 750 can perform that of the i7 intel 4460 but its 2nd gen nahelem so its highest oc is probably 4.8ghz with water cooling= i7 920 at 3.5ghz or i5 4460 performance equivalent clock per clock or a bone stock i7 4690k turbo at 3.5ghz.
different socket type but try these settings Ive done with a 45nm i7 920 @ 4.5ghz stable and 4.8ghz x5675 32nm and that should be good for the 750 i5 32nm @ 4.6ghz
fsb-220
multi-21x
cpu 1.45-1.4825volts
qpi 1.35v
ddr3 2000(10-10-10-20)
32nm overclocks higher and the settings remain the same as 45nm besides memory support for ddr2000. i maintained the two systems at 4.4 and 4.6ghz 24/7 so voltage spikes wouldnt fry my IMC
 
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oinkypig

oinkypig

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realistically the cpu speeds of everything except z170 socket is only 25% faster than the 1st gen i7 45nm nehalem processors that came out in 2008 when its compared to the 4790k .A max 4.5ghz 920 is 25% slower than the 4.5ghz 4770k. 2600k=3770k=4770k performance only clock per clock.
YES A 25% DIFFERENCE starts seeming closer to 10% 2st gen vs stock 5th gen. An i5 750 >4.5ghz i5 750 will equal 3.5ghz on i7s 4690k in CPU benchmarking. cne11.5/15 and pcmark 7. Its too much to upgrade until seeing skylake 10 core cpu that show up online drop in price.
 
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Ali Husain

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Well guys, despite all the negative reviews I have met a guy who has an i5 750@3.5GHz without any aftermarket cooling and can play modern games at a high FPS (while using an MSI GTX 660) games like Mad max. Now if I get it to more than 4 GHz than I am almost certain that it will perform just as well as I need it to. But I have learned that it will definately not compare to a modern i7. Thanks guys for all the help, but I think this is all I will need, and I predict it will last for >5 years

Thanks for all the input and help!
 
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Ali Husain

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Let me try and make this more simple ...
He states that the 1st generation i7 (released in 2008) which is Overclocked to 4.5 GHz (base clock is about 2.9GHz) can perform about 25% slower than a much newer processor (5th gen) like the i7 4770K - when it is at stock speeds (3.5GHz).
If you OC an i5 750 to 4.5GHz (base clock is 2.66GHz) It will perform the same as an i5 4690K (at 3.5GHz - stock speed).
And then he states that I should wait for skylake 10 core CPU, so the online prices will drop. (which is a super-helpful answer)
 
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Ali Husain

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He either did the benchmarks himself or got them from someone, but his answer is quite realistic and helpful, I am almost completely certain these are the results I am going to get. I highly, highly doubt that these are fake or estimated. He also said
that the benchmarking companies are CNE11.5/15 and PCmark 7
 
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Ali Husain

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Well, I didn't think you where being rude, but anyway, lets get on with it. The performance mainly comes from the GPU, however the CPU can bottleneck. And the CPU will eventually become useless if it can handle the game without frame-rate issues (based on only CPU rendering - without GPU) after that, all the performance comes straight from the GPU. I do accept that many CPU's are better than this, but the 8MB L3 Cache is compelling, especially since it will actually perform better than most modern CPU's at photoshop due to Intel only putting 6 MB of L3 Cache. I do appreciate all the help.
 
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