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Old September 26, 2010, 05:09 AM
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Default i5 vs i7 (well i did search!)

its not very easy to search i5 and i7 as two letters... stupid intel...

anyway... as far as i see.. i5 and i6 at same class are not big different... right?

but someone says it...

Quote:
Well it depends on what you'll use it for. If it just going to be used for email and web surfing then i would say I5. If it going to be gaming that only going to use 1 graphic card the the get the I7 8xx's. If your going to need 2 graphic cards for a game and/or need max ram bandwidth for memory intensive programs then the I7 9xx's cpu's.

Here's some pros and cons to each CPU series.

I5:
Pros:
Cheap cpu.
Great turbo
Will get the job done for most to all programs.
Runs cooler than the I7 9xx's
Can run faster 1333 MHZ ram than the I7 9xx's.

Cons:
No HT
No triple channel memory
Doesn't have full dual 16x bandwidth for 2 video cards.
Will not be upgradable with 6+ core cpus.

I7 8xx's
(pretty much the same as i5's)

Pro's:
HT
Can be cheaper than the 9xx's (depending on locations and store)

I7 9xx's:
Pro's:
Triple channel memory
HT
full Dual 16X video bandwidth.
upgrade option down the road to the Core i9 when you need 6 cores

Con's:
Can be expensive. (depeding on location and store)
can be very hot if not in a well ventilated case.
Can only run 1066 MHz ram unless over clock to fully use cheaper 1333 MHz.
not as powerful turbo as the i5 and i7 8xx's cpus.

Well i hope this helps.
at http://www.tomshardware.com/forum/26...8-tomshardware

do you agree?

anyway... please someone tells me the summary of this... thanks...
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Old September 26, 2010, 06:50 AM
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the price difference on these cpu will be mainly on the cost of the entire system. socket 1366 motherboards are more expensive, and a 3 channel memory kit is more expensive then a dual channel kit of the same ram. Also, i'm not sure about where they got that info about the ram speed... both platforms can use ddr3 up to way faster speeds than 1333... I myself use ddr3 1600 and you can use ddr3 2000 on a 1366 motherboard if you want to. you need to look at what your motherboard can take..

So the i7 860 (for exemple) on the socket 1156 should perform as well as an I7 930 on the 1366 platform, beside the fact it has less ram.

Belong to me, it's all on what you intend to use your build for and all about the budget. If you plan to SLI or CrossFireX, I'dd go with 1366... but for a basic gaming build with only one GPU (or 2 lower end GPU that won't go over PCI-e bandwidth) 1156 should do it. and 4Gb ram is plenty for a normal gaming build.
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Old September 26, 2010, 10:47 AM
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so i will grab i7 then... thank you ;]
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NEW: customize case, hx100, i7 920, supreme hf, x58 sabertooth, 3gbx2 ram of ripjaws, xfx hd6950 CF. vertex 2 60gb, seagate and hitachi 1tb, dual mcp355 with ek rex v2, 2x koolance ar697, 2x mcr320, 6x zm-f3 fans.
OLD: cm 690, hx620, intel q9450, True Black, ga-ep45-ud3p, 2gbx2 ram of mushkin xp2 8500, xfx 285. wd caviar se16 640gb, 4x zm-f3 fans.
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Old September 26, 2010, 10:59 AM
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It's all in the hyperthreading if you are compareing CPU's only. i7's have it, i5 Quad Cores don't.
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Old September 26, 2010, 11:42 AM
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yes,what are you going to use it for? email, anything or almost can do lol
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Old September 26, 2010, 11:46 AM
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check my build plan... ;p

gen3 build
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NEW: customize case, hx100, i7 920, supreme hf, x58 sabertooth, 3gbx2 ram of ripjaws, xfx hd6950 CF. vertex 2 60gb, seagate and hitachi 1tb, dual mcp355 with ek rex v2, 2x koolance ar697, 2x mcr320, 6x zm-f3 fans.
OLD: cm 690, hx620, intel q9450, True Black, ga-ep45-ud3p, 2gbx2 ram of mushkin xp2 8500, xfx 285. wd caviar se16 640gb, 4x zm-f3 fans.
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Old October 8, 2010, 02:28 AM
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Differences between Bloomfield (9xx chips) and Lynnfield (7-8xx chips) go a little deeper than that.

If you're looking for details, I'd suggest Intel's website. They list processor specs in lists by i7, i5 and i3, etc. Bus speed goes from 4.8 to 2.5 GT/s in i7 when dropping from Bloomfield to Lynnfield. Lynnfield and Clarkdale (i5-6xx and i3) use the same 2.5 GT/s bus speed, but the cache size drops from 8GB to 4GB -- which makes sense because Clarkdale i5 use only two cores.

That said, Hyperthreading actually does exist on Clarkdale i5 chips. All i5 chips run four threads -- Lynnfield does it with four cores, while Clarkdale does it with two cores and Hyperthreading. For that matter, i3 chips use Hyperthreading.

i7: 4 or 6 cores (8 or 12GB cache), with Hyperthreading and Turbo Boost (Bloomfield OCs better but Lynnfield has better Turbo)
i5: Turbo Boost, 2 cores (4GB) with Hyperthreading (Clarkdale, i5-6xx) or 4 cores (8GB) without HT (Lynnfield i5-7xx)
i3: 2 cores (4GB), HT, no Turbo
Pentium: 2 core (4GB), no HT, no Turbo, small caches
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Old October 8, 2010, 05:23 AM
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Smile i5 vs i7

8-12gb cache? Wow, plenty of space!!! must be built in ram for those puppies. Slight typo, no big deal. No offence buddy. I have my fair share of Homer moments. That's right, I said HOMER moments.
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Old October 8, 2010, 08:31 AM
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Since ive personally owned an i5 750, i7 860, and an i7 920 setup I can say this much. Depending on your tasks, these setups can seem marginally different in terms of how fast it is. Gaming and day to day apps the i5 750 is overkill at stock, and they oc like crazy and the heat output isnt too bad due to lack of hyperthreading. The i7 860 wasnt much different at all in terms of speed until I ran GAITsim that require an extreme amount of cpu power, where the hyperthreading kicked in. i7 920 wasnt too much faster in terms of speed, but I did require the extra pci express lanes that the p55/h55 series lacked.(with the exception of NF200 p55 boards)
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