Core i3/ i5 first gen CPU performance: What to expect?

Hi all,

I just got a Core i5-750 (first generation) this weekend, and would like to know if there is anyone here who has this same CPU, or maybe a Core i3, so I can compare. I´m willing to figure out what to expect from it, assuming I get a high end GPU (so it's not the system bottleneck). Say, a race with 20 AI cars, is the i5-750 fine?
Thanks!

Rodrigo

 

You'd be better off with an 860 i5 however i don't know much about duel core cpus. Rf does not use more than 2 so a faster clock per core on a duel will work better than a slower clock per core on a quad at 3.2 ghz its no strain on my quad however my quad can take care of other system tasks in the background. This is where you may suffer some micro pausing but you should be fine over 3.5-4ghz and with only essential system tasks running.

 

If you can, hold off or return what you’ve got and wait a little bit for the release of Intel’s Ivy Bridge “I” series CPU’s along with the new Z77 chipset.

 

Dont expect any major performance increase with ivybridge, its just a die shrink right now, power and efficiency is better but base clock and all features will remain the same, the only great thing to look forward to right now is potentially a higher overclock.

 

The higher over clocking potential and efficiency will help with games like rFactor2 that use older game engines that are primarily CPU dependent. The new Z77 chipset is also a significant improvement over Z68, no sense in investing in yesterday’s hardware unless you’re getting it for an unusually good deal.

Ivy-Bridge architecture improvements -

http://www.anandtech.com/show/4830/intels-ivy-bridge-architecture-exposed/2

 

No, I don't have a choice... The i5 was a sort of gift.
So, there's really no any more core i3/i5 1o. gen users in this forums?

Rodrigo

 

So, I must conclude that you don't think this CPU will be enough to handle rFactor 2 fine?
Maybe someone from the ISI staff could say a word about this?
Anyway, thanks for your help

Rodrigo

 

So, I must conclude that you don't think this CPU will be enough to handle rFactor 2 fine?
Maybe someone from the ISI staff could say a word about this?
Anyway, thanks for your help

Rodrigo

 

You’re not going to see great result’s running that at its stock clock speed but if you overclock it up to 3.5 GHz+ along with a decent video card you should get good performance.

 

I'm trying to run it on an i5 750 with ATI 5850 and speed wise it isn't too bad but I can't run it maxed out and only have 15 AI.

I thought I'd Overclocked my CPU to 3.2 but it seems it was a bad overclock and actually ran slower in games (2.8) than desktop (3.2) anyway FPS were 44 at back of the grid and after fixing my bad overclock and now getting 3.6, I gained ZERO FPS though.

They really need to use more cores as raw speed gets very expensive the faster you go.

 

Thanks, F2kSel! Very good to know about your experience. I suppose your bottleneck is your GPU? What if you turn things off, or lower your resolution? Does the fps increase above 44?
I might consider an overclock as well then, as you did. I heard it's not that difficult with the 750
Cheers

 

Eh? rF2 can really use all cores available? Where did you get that info from Les? If that info is correct, well sir, that really is a good news!

 

Hahahaaha. I think LesiU is wrong on this one.

 

I have most settings down to and including shadows set to high and everything below that set to off.
I can increase FPS if I turn more stuff off but after the first corner FPS rise to around 60-80 anyway once the other cars spread out. I haven't tried in the rain but don't think it would be that great though.

I have one real game killer for me, my FPS are cut in half if I go to desktop and back to the game. Before the last patch it was the other way round which isn't as bad just annoying but now I have to restart the whole game and that takes to long.

 

There is a strange thing with Nvidia cars. on banchmark.pl they made a test, and the results was something like this:

With less than 4 cores NV are slower. 4 and more cores in cpu makes same fps performance. ATI cards don't have that issue (or not as much as NV). So when you have 2-3 core cpu, ATI can be faster than with similar Nvidia, but comparing the same card on 4 cores can get the opposite result.

http://www.benchmark.pl/testy_i_recenzje/Radeon_i_GeForce_na_procesorze_2-_i_4-rdzeniowym... ONLY IN POLISH

 

I run a Core i5 2500k right now. Performance is fantastic with all options cranked up (460 GTX) and a full grid, I experience no slow downs with a minimal FPS of around 50 FPS, max near 90. rFac tor2 doesn't have a benchmarking tool so I'm going by glancing at the FPS in the built-in frame rate counter. I have been very happy with this build.

Looking at reviews, it seems that performance of the older i5 750 is somewhat below that of Sandy Bridge. Comparing the 2500k to the 750, it looks like raw CPU performance in gaming is 15%-25% (roughly) worse. It depends on the application and setup. If we go worse case scenario and say that the i5 750 performance will slow down rFactor2 a full 25%from my own system you are still looking good.

that means my 50-90 FPS becomes 38-68 FPS which is still very playable. With a better GPU and maybe turning things like shadows down a bit, you will be very happy with your build IMHO.