Intel Core i5-750 and Core i7-870
'Lynnfield' performance figures are go
Review We published an in-depth look at Intel's 45nm 'Lynnfield' processors - aka the quad-core Core i7-870 and Core i5-750 - last week. Unfortunately, the chip giant's non-disclosure agreement (NDA) prevented us from including full performance figures.
Intel officially launched the new chips yesterday morning, so we're now free to present the results of our benchmark tests in full.
The LGA1156 Core i5-750 was tested on an Asus P7P55D Deluxe motherboard, while the Core i7-870 was plugged into both the Asus board and a Gigabyte P55M-UD4. In the charts, the figures derived from the Asus tests are the two top-most Core i7-870 bars - the next two down are the Gigabyte numbers.
We've also included figures for the LGA1366 Core i7-940 'Bloomfield' processor, which was tested on an EVGA X58 SLI motherboard. The Core 2 Extreme QX9650 figures come from tests made on an Asus Maximus II Gene board.
Here is a summary of the various chips' key settings:
Apart from clock speed, what separates the i7-870 from the i5-750 is the presence of HyperThreading - the former has it, the latter doesn't. Both have 8MB of cache. HT effectively turns the i7-870 into an eight-core processor.
Jonathon, in the Lynnfield preview we used the Core 2 QX9650 as a base line as that was the processor that Intel used at IDF and we were trying to stay within the NDA on performance figures. Intel presumably selected the QX9650 as the clock speed was the same.
We also compared the Core i5/Core i7 800 with Core i7 900.
now there's a fair comparison.
Umm, why does everyone compare the new chips to the olde QX9650.
The Q9650 was vastly superior to the QX in everyway. and a fairer comparison as it was in the last "tock" of the family.
Bit like comparing a DX4 100mhz to a pentium 4 isn't it? (purposly exagerated).
Happiness is the moment between when you do something; and when you tell a woman what you did.
Find it a bit odd Intel didn't send out the 860 to benchmarkers, the 870 is stupidly over priced for the marginal clock bump over the 860.
That said, the reasonably priced, lowish power 750 is clearly designed to hurt AMD (although the comparatively expensive motherboards prevent the intels matching AMD) and they want to show off the most powerful of the new line. Guess showing off the 860 would just highlight the bizarre 870 asking price.
I've placed an order for a 860 to replace my e6750, should be quite a nice performance boost when coupled with the new ATIs that get shown off tomorrow.