Intel Skylake / Kaby Lake

[Sweepr]

Has there been single thread benchmark numbers published? All I see is MT Cinebench

If anything there's going to be a bigger difference cause Devil's Canyon max turbo is 200 MHz higher.

 

[Insert_Nickname]

I'm more interested in the chipset than the CPU. Previous leaked slides showed the Z100 Skylake would support 20 PCI-E 3.0 lanes from the chipset, up from the Z97's 8 PCI-E 2.0 lanes. These latest slides say the chipset PCI-E lanes are being updated to 3.0 but don't list the number of lanes (PCI-E lanes direct to the CPU remains at 16). These new slides refer to "40% more high speed I/O" but it's not clear to me what this 40% figure refers to.

As the others pointed out, it doesn't matter how many PCIe lanes comes of the PCH. You'll still be limited by the PCIe 3.0 x4 "DMI 3.0" interface between CPU and PCH. Which can already be saturated by a decent PCIe SSD.

When I heard that, all my enthusiasm for regular Skylake went right out the window. Honestly how much cost and effort would it take to add a couple, or four, general purpose PCIe lanes from the CPU? Especially since they're changing socket anyway. AMD has been doing this since Llano...

 

[Nothingness]

If anything there's going to be a bigger difference cause Devil's Canyon max turbo is 200 MHz higher.

Do you mean Intel didn't increase turbo when all cores are used on Skylake?

 

[therealnickdanger]

In the words of the immortal Beavis and Butt-head: BOI-OI-OI-OI-OING! I think I've found the new platform for our next his and her gaming rigs. Combined with whatever the best GPUs $500 can buy, we should be set for another 5 years.

 

[Sweepr]

Do you mean Intel didn't increase turbo when all cores are used on Skylake?

4.2GHz max for Core i7 6700K vs 4.4GHz max for Devil's Canyon Core i7 4790K. 4-core turbo is probably 100MHz or nothing for Skylake.

 

[Sweepr]

Full line up revealed. August launch.

Edit 2: Cloudfire777 was faster.

 

[Arachnotronic]

Full line up revealed. August launch.

Edit: Arachnotronic was faster.

Credit goes to Cloudfire777, not to me

 

[Sweepr]

2.8-3.6GHz 4C/8T Skylake at 35W TDP and regular non-K models down to 65W TDP. Nice.

 

[ShintaiDK]

Yep. If IPC is ~15%, you get something equal to a 3.9/4.6Ghz Haswell at 65W

Now I have to get the 65W i7

 

[IntelUser2000]

If anything there's going to be a bigger difference cause Devil's Canyon max turbo is 200 MHz higher.

It's likely with 6700K the Max Turbo for both ST and MT is 4.2GHz. That means it compares against 4.2GHz MT and 4.4GHz ST on 4790K. It'll probably be somewhat less than the MT results.

Actually, that may not even be the case depending on how the architecture is optimized - more ST or more MT.

This is pretty good.

 

[Sweepr]

And Core i7 6700T should deliver close to Core i7 4770K performance at 35W TDP. Tempting options.

 

[Sweepr]

It's likely with 6700K the Max Turbo for both ST and MT is 4.2GHz. That means it compares against 4.2GHz MT and 4.4GHz ST on 4790K. It'll probably be somewhat less than the MT results.

Actually a better comparison would be Core i5 4690K vs Core i5 6600K cause both chips operate at 3.5-3.9GHz.

Core i5 4690K scores 6.6-6.7 points @ Cinebench 11.5 MT at stock vs Core i5 6600K (ES?) 7.67 points. ~15% better performance from Skylake.

Ps: First post updated.

 

[Insert_Nickname]

And Core i7 6700T should deliver close to Core i7 4770K performance at 35W TDP. Tempting options.

Not to mention better Gen9 graphics. Might get one of those for my HTPC...

 

[Sweepr]

Skylake vs Haswell Launch SKU Comparison

''S'' line is gone, now regular non-K CPUs have 65W TDP.
More quad-core 35W ''T'' options. Base clock now 2.8GHz, up from 2GHz.

 

[frozentundra123456]

Yea, about those gen 9 graphics. Hope they bring some real improvement. Gen 8 was supposed to, but except for more shaders, it seems the architechture did almost nothing.

Overall, the cpu performance improvement is decent but not spectacular, but coupled with the lower power, performance/watt should be really nice. Hopefully this will bring some good cpu and igpu performance to latptops.

 

[frozentundra123456]

Skylake vs Haswell Launch SKU Comparison

''S'' line is gone, now regular non-K CPUs have 65W TDP.
More quad-core 35W ''T'' options. Base clock now 2.8GHz, up from 2GHz.

4570t must be a typo. says only 2 cores.

 

[Arachnotronic]

Yeah, looks like a big clock speed boost for the low-wattage models.

Definitely seeing the benefit of 14nm there!

 

[ShintaiDK]

4570t must be a typo. says only 2 cores.

Its not a typo.

 

[BSim500]

4570t must be a typo. says only 2 cores.

Actually that's accurate:-
http://ark.intel.com/products/75045/Intel-Core-i5-4570T-Processor-4M-Cache-up-to-3_60-GHz

It's a leftover relic from some of the earlier generations where a few low powered i5-T variants were dual cores but with Turbo Boost (eg, i5-680 was a Clarkdale i3 with TB).

 

[Sweepr]

Core i5 6400 has considerably lower clocks than the other quads. Makes me wonder if Intel will release this quad at a lower price, perhaps ~$160?

 

[inf64]

Anyone knows what could be the possible price for i5-6600? That is the one I would maybe consider buying. I don't need 8 threads and unlocked multiplier since with its high Turbo mode and high IPC there is no need for 4+Ghz speeds anyway.

 

[ShintaiDK]

Anyone knows what could be the possible price for i5-6600? That is the one I would maybe consider buying. I don't need 8 threads and unlocked multiplier since with its high Turbo mode and high IPC there is no need for 4+Ghz speeds anyway.

Same as the i5 4690. Plus inflation on top. But who knows what the dollar rate have done. May end up cheaper.

 

[stockwiz]

Might upgrade my 2600K sandy system 'just because' ... my mother's powerful system is the Q6600 system I gave to her when I built the sandy system and it's getting a bit long in the tooth.. her HTPC is relatively ancient...

It would be a big upgrade for her and I can upgrade just because... well.. it's a hobby and I feel like it. Dunno if I really feel like going quad core to quad core though. Might hold off until they start making 6 core chips standard...

 

[inf64]

Same as the i5 4690. Plus inflation on top. But who knows what the dollar rate have done. May end up cheaper.

Yep but I suppose motherboard prices would be a bit higher and DDR4 is more expensive than DDR3 right now so the price may end up quite a bit higher than Haswell setup. I'm on a fence to either buy 4670(k) or just wait. If I would go with Haswell I would buy K variant and if going with Skylake I would just take i5-6600.

 

[Arachnotronic]

Might upgrade my 2600K sandy system 'just because' ... my mother's powerful system is the Q6600 system I gave to her when I built the sandy system and it's getting a bit long in the tooth.. her HTPC is relatively ancient...

It would be a big upgrade for her and I can upgrade just because... well.. it's a hobby and I feel like it. Dunno if I really feel like going quad core to quad core though. Might hold off until they start making 6 core chips standard...

What's wrong with the 5820K? It's like $60 or so more expensive than the mainstream "K" at a chip level. It uses DDR4 just like Skylake, and I guess you might have to pay a premium for the board...but if you want six cores at basically mainstream prices, 5820K does it...