The Ivy Bridge Preview: Core i7 3770K Tested
by Anand Lal Shimpi on March 6, 2012 8:16 PM EST- Posted in
- CPUs
- Intel
- Core i7
- Ivy Bridge
The Lineup
Intel will initially launch quad-core SKUs on the desktop. Ivy Bridge will be branded as Intel's 3rd generation Core microarchitecture and use model numbers below 3800. The 3800 - 3900 series are reserved for Sandy Bridge E for the time being, while the 2000 series refers to last year's Sandy Bridge parts. Just like we saw with Sandy Bridge, Ivy will be available in fully unlocked (K-series), partially unlocked (any part with Turbo support) and fully locked (anything without Turbo support) SKUs.
What we know about the lineup today is summarized in the table below:
| Processor | Core Clock | Cores / Threads | L3 Cache | Max Turbo | Intel HD Graphics | TDP | Price |
| Intel Core i7 3960X | 3.3GHz | 6 / 12 | 15MB | 3.9GHz | N/A | 130W | $990 |
| Intel Core i7 3930K | 3.2GHz | 6 / 12 | 12MB | 3.8GHz | N/A | 130W | $555 |
| Intel Core i7 3820 | 3.6GHz | 4 / 8 | 10MB | 3.9GHz | N/A | 130W | $285 |
| Intel Core i7 3770K | 3.5GHz | 4 / 8 | 8MB | 3.9GHz | 4000 | 77W | $332 est |
| Intel Core i7 3770 | 3.4GHz | 4 / 8 | 8MB | 3.9GHz | 4000 | 77W | $294 est |
| Intel Core i5 3570K | 3.4GHz | 4 / 4 | 6MB | 3.8GHz | 4000 | 77W | TBD |
| Intel Core i5 3570 | 3.4GHz | 4 / 4 | 6MB | 3.8GHz | 2500 | 77W | TBD |
| Intel Core i5 3550 | 3.3GHz | 4 / 4 | 6MB | 3.7GHz | 2500 | 77W | TBD |
| Intel Core i5 3470 | 3.2GHz | 4 / 4 | 6MB | 3.6GHz | 2500 | 77W | TBD |
| Intel Core i5 3450 | 3.1GHz | 4 / 4 | 6MB | 3.5GHz | 2500 | 77W | TBD |
| Intel Core i5 3330 | 3.0GHz | 4 / 4 | 6MB | 3.2GHz | 2500 | 77W | TBD |
| Intel Core i7 2700K | 3.5GHz | 4 / 8 | 8MB | 3.9GHz | 3000 | 95W | $332 |
| Intel Core i7 2600K | 3.4GHz | 4 / 8 | 8MB | 3.8GHz | 3000 | 95W | $317 |
| Intel Core i7 2600 | 3.4GHz | 4 / 8 | 8MB | 3.8GHz | 2000 | 95W | $294 |
| Intel Core i5 2500K | 3.3GHz | 4 / 4 | 6MB | 3.7GHz | 3000 | 95W | $216 |
| Intel Core i5 2500 | 3.3GHz | 4 / 4 | 6MB | 3.7GHz | 2000 | 95W | $205 |
Unlike the initial Sandy Bridge launch, both fully and partially unlocked Ivy Bridge parts will ship with Intel HD 4000 graphics - although that's still reserved for the high-end on the desktop. I am also seeing movement towards removing core-count restrictions on turbo frequencies. Today max turbo is defined in most cases by the highest frequency you can reach with only one core active. I would not be surprised to see Intel eventually move to a setup where max turbo can be reached regardless of number of active cores and just base it on current power consumption and thermal conditions.
Chipset Support
Ivy Bridge uses the same LGA-1155 socket as Sandy Bridge. Provided there's BIOS/UEFI support from your board maker, you can use Ivy Bridge CPUs in older 6-series motherboards. Doing so won't give you access to some of the newer 7-series chipset features like PCIe Gen 3 (some 6-series boards are claiming 3.0 support), native USB 3.0 (many 6-series boards have 3rd party USB 3.0 controllers) and Intel's Rapid Start Technology.
| Chipset Comparison | ||||||||
| Z77 | Z75 | H77 | Z68 | P67 | H67 | |||
| CPU Support |
IVB LGA-1155 |
IVB LGA-1155 |
IVB LGA-1155 |
SNB/IVB LGA-1155 |
SNB/IVB LGA-1155 |
SNB/IVB LGA-1155 |
||
| CPU Overclocking | Yes | Yes | No | Yes | Yes | No | ||
| CPU PCIe Config |
1 x16 or 2 x8 or 1 x8 + 2 x4 PCIe 3.0 |
1 x16 or 2 x8 PCIe 3.0 |
1 x16 PCIe 3.0 |
1 x16 or 2 x8 or 1 x8 + 2 x4 PCIe 3.0 |
1 x16 or 2 x8 PCIe 3.0 |
1 x16 PCIe 3.0 | ||
| Processor Graphics Support | Yes | Yes | Yes | Yes | No | Yes | ||
| Intel SRT (SSD caching) | Yes | No | Yes | Yes | No | No | ||
| RAID Support | Yes | Yes | Yes | Yes | Yes | Yes | ||
| USB 2.0 Ports (3.0) | 14 (4) | 14 (4) | 14 (4) | 14 | 14 | 14 | ||
| SATA Total (Max Number of 6Gbps Ports) | 6 (2) | 6 (2) | 6 (2) | 6 (2) | 6 (2) | 6 (2) | ||
| PCIe Lanes | 8 (5GT/s) | 8 (5GT/s) | 8 (5GT/s) | 8 (5GT/s) | 8 (5GT/s) | 8 (5GT/s) | ||
The big change this year is that all 7-series chipsets support processor graphics, while last year Intel had the silly P vs. H split until Z68 arrived and simplified everything.
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retrospooty - Wednesday, March 7, 2012 - link
"Nice to see AMD winning where it actually matters for most consumer applications."I dont see how you can look at these (or any) benchmark and call it a win for AMD. Intel is smoking them. A few useless integrated graphics benchmarks and you call it a win? Hey, I hear RIM is looking for a new PR rep, they could really use a guy like you. ;)
juampavalverde - Tuesday, March 6, 2012 - link
IGP performance is nice, but no comments about the subjective quality, i have seen side to side HD Graphics 2000 vs Radeon IGP and the graphics quality was night and day, with the radeon being the day...I dont know whats needed to do properly integrated graphics, but seems intel still lacks...
nuha_te10 - Tuesday, March 6, 2012 - link
Yes,people standard are different. For gamer intel IGP might suck, but it's more than enough for me.If I buy Llano, the graphic core might be just a wasted silicon because I don't really do gaming.Buy 1 if you only need 1lowenz - Tuesday, March 6, 2012 - link
OK, DirectCompute is supported by the GPU: we see the fluid benchmark in review.But GPU is OpenCL 1.1/1.2 compliant?
ltcommanderdata - Tuesday, March 6, 2012 - link
You mentioned in your intro about the Intel-Apple exclusivity agreement being up and Apple constantly pushing Intel for better GPU performance. Do you think Ivy Bridge has made sufficient gains in GPU performance to keep Apple on board? Have you had a chance to test Ivy Bridge's IGP OpenCL performance since that seems like a particular area of interest for Apple?tipoo - Tuesday, March 6, 2012 - link
I think its sure that they will. They chose a weaker CPU in favour of a stronger IGP (9400 and Core 2 Duo) before, but now we're at a point where the HD4000 would be more than adequate for Mountain Lion and probably onwards, plus Intel is way ahead with 22nm and the resulting power draw as well as CPU performance, and I think Apple uses Quicksync for Airplay which is Intel-only.Exodite - Wednesday, March 7, 2012 - link
It really depends on your workload.Personally I need CPU grunt far more than GPU grunt, which I suppose means I wouldn't even strictly need the 4K class GPU.
But it's 'free' so I'll take it. :)
tipoo - Tuesday, March 6, 2012 - link
The top end models which would probably be paired with a discreet card get decent integrated graphics, while the low end ones which will probably be standalone get cut down IGPs. Odd. If anything I think on the top end people would want models with less space used on integrated graphics with that headroom used for higher clocks or lower prices, even the cut down IGPs can do Quicksync.Also a suggestion for the full review, we know pretty much to expect from the HD4000 performance wise, but what about image quality? AMD and Nvidia improved things generation after generation, and I doubt Intel got it right with their first or second serious foray into lower-midrange graphics.
lowenz - Tuesday, March 6, 2012 - link
Apple?If IGP supports OpenCL as well as DirectCompute there's no more reason for a AMD APU for pro users not gamers.
tipoo - Tuesday, March 6, 2012 - link
Seriously, this is too much, its fine that you have an opinion and I might not have a problem with it if you posted it once, but you post the same damn thing on every article whether its related or not and usually multiple times, someone just please do us all a favour and ban this guy and delete his comments?