- 45nm Lynnfield 95W
- 8MB L3 Cache
Next biggest thing! 09/11/2009
This review is from: Intel Core i5-750 Lynnfield Quad-Core 2.66 GHz LGA 1156 95W BX80605I5750 Processor
Super efficient/cool, fast at stock speeds, even faster when overclocked (and it overclocks like MAD), turbo mode (makes it better than most pre-lynnfield i7s in single-thread performance) - which improves performance of single threaded apps by disabling inactive cores & clocking the active core by TDP of the cpu. That means at stock settings (2.66ghz (133x20)) with turbo enabled, you can have single thread performance from a ~3.2ghz core (133x20) - google "Intel Turbo" if you want to learn more (it's a very nice feature). I can't get over how wickedly efficient this thing is!
You're not likely to have any trouble getting any Lynnfield cpu above 3.6ghz - providing you've got an aftermarket cooler for it.
No HT (this is basically the only area which really matters where it loses to the i7 920 in performance). The manual multiplier is locked at (or below) stock 20x (up to 24x with turbo mode but that's only with 1 core, or 22x with 2 cores, or 21x with 3 cores (I believe..)). Neither of these should stop you from getting this CPU, unless the i7 870 drops in price or another (better) cpu has been released for a similar price.
Stock cooler is kind of mediocre, just buy an aftermarket one (which brings up another point, why did intel have to make the mounting holes a couple mm further (or was it closer) apart/together than the lga755 coolers? Most of those are rated for higher TDP and would work very well as a heatsink for this).
I'm blown away with how substantial this cpu is. My s939 motherboard died the night before these launched and I almost got an i7 920 setup (which would've cost >$200 more) - I'm glad I didn't. This (and the 1156 mobos) are much more efficient & cheaper to boot - it also bests the i7 920 at quite a few things.
Overclocking: I've got mine at 3.8ghz (181x21 - my P55-GD65 motherboard has a 'bug' or something that enables 21x multiplier on all cores) w/ turbo enabled (4.35ghz on a single core (181x24)). It can go higher, but I prefer to keep my voltage below 1.4 (at 3.8ghz I've got it on 1.36v). At these speeds, my super pi time is slightly under 9.8 seconds. My old 939 x2 4200+ was lucky to get under 35s. I also have a Cooler Master 212 Plus which is phenomenal, running prime95 on a maximum heat generation mode, my fan doesn't have to kick above "idle" (which is at 1000rpm / practically inaudible) to keep it below 45c.
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