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Skylake Clockspeeds and benchmarks!

At this point I can't say they look that appetizing anymore, neither Broadwell nor Skylake. For me I think the best thing is to wait and see how DX12 & Vulkan develop. I'm much more interested in seeing the new Intel/AMD CPUs for next year or the year after that.
 
I've been pining for an upgrade since Christmas 2013 lol! After the hype dies down I keep telling myself, let's just wait for the next one... Dunno if I will be able to resist this year though :D

Either way, I'm sure we will all be here in 6-12 months time discussing the next one.
 
rtho782 said:
20 lanes of PCIe 3.0 from the PCH, but how does the PCH link to the CPU?

I get the feeling we'll see the CPU lanes used up for SLI/Xfire as usual, then all the usual stuff hanging off the PCH (SSDs, HDDs, GbE, Audio, USB3.0, etc) all connected by DMI, which is basically PCIe 2.0 x4. Yay bottlenecks.
Click to expand...

I'd recommend reading the opening post of the thread, plus countless other posts in the thread, where it's explained that the Z170 chipset (PCH) upgrades the link to the CPU to PCI-EV3 (DMI 3.O) - enabling Z170 to have 20 fullfat PCI-E v3 lanes direct to the CPU.

So, 16 lanes for GPU's, and 20 lanes for everything else, which is a huge improvement from Z97 - enabling multiple PCI-E SSD's full bandwidth at the same time as GbE transfer, USB3 etc etc. No PCIe -2 bottleneck, that's reserved for Z97, Z87 etc etc.
 
Dave2150 said:
I'd recommend reading the opening post of the thread, plus countless other posts in the thread, where it's explained that the Z170 chipset (PCH) upgrades the link to the CPU to PCI-EV3 (DMI 3.O) - enabling Z170 to have 20 fullfat PCI-E v3 lanes direct to the CPU.

So, 16 lanes for GPU's, and 20 lanes for everything else, which is a huge improvement from Z97 - enabling multiple PCI-E SSD's full bandwidth at the same time as GbE transfer, USB3 etc etc. No PCIe -2 bottleneck, that's reserved for Z97, Z87 etc etc.
Click to expand...

Thanks, I missed that.

Even so, DMI 3.0 is still only equivalent to PCIe 3.0 x4.

So you're still putting 20 lanes of devices, plus all the other stuff, down a 4 lane link.

I don't think I like intel using PCIe lanes as a product stack differentiator. It means we're still going to need PLX chips for 3/4way SLI.
 
rtho782 said:
Thanks, I missed that.

Even so, DMI 3.0 is still only equivalent to PCIe 3.0 x4.

So you're still putting 20 lanes of devices, plus all the other stuff, down a 4 lane link.

I don't think I like intel using PCIe lanes as a product stack differentiator. It means we're still going to need PLX chips for 3/4way SLI.
Click to expand...

Doubling the DMI transfer speed to 8GT is still a solid upgrade over Z97 - it will still enable multiple PCI-E SSD's to be used in conjunction with high speed USB3, SATA3, GbE etc.

I don't think we know conclusively that the DMI 3.0 link is only 4 lanes wide yet - so we may be in for a surprise if this got upgraded to 8 or more lanes.
 
Woot - more benchmark reuslts! Found these posted on Anandtech, credit to the poster there for spotting them:

Sisoft Sandra:
6700K - http://www.sisoftware.eu/rank2011d/show_run.php?q=c2ffcee889e8d5e0d5e0d8efdbfd8fb282a4c1a499a98ffcc1f9&l=en
4790K - http://www.sisoftware.eu/rank2011d/show_run.php?q=c2ffcee889e8d5e0d5ecd8e8dcfa88b585a3c6a39eae88fbc6fe&l=en

Core i7 6700K (up to 4.2GHz):
Multi-Media Integer 390,86Mpix/s
Multi-Media Long-int 181,37Mpix/s

Core i7 4790K (up to 4.4GHz)
Multi-Media Integer 328,08Mpix/s
Multi-Media Long-int 144,12Mpix/s

6700K is 19% faster with Multi-Media Integer
6700k is 25.6% faster with Multi-Media Long-int

Perclock results (Individual results section of the links above)

Core i7 6700K: 79,73Mpix/s/GHz
Core i7 4790K: 67,42Mpix/s/GHz

I7 6700K = 18.25% faster per clock.

So, there we have it, another confirmation of the 15% IPC increase - looks like you were wrong, Boomstick :p
 
So about 20%, for ivy bridge users an 25% 30% for Sandy Bridge users. That might just be ebough for to upgrade although I'm tempted to wait for Zen and see what that offers first its not like CPU's are becoming increasingly bottlenecked by the latest games.
 
If no IVR and a pasted ihs setup, it may run slightly cooler than Ivybridge due to the smaller manufacturing process.
 
Freddie1980 said:
So about 20%, for ivy bridge users an 25% 30% for Sandy Bridge users. That might just be ebough for to upgrade although I'm tempted to wait for Zen and see what that offers first its not like CPU's are becoming increasingly bottlenecked by the latest games.
Click to expand...

Depends what your currently using tbh.


As a X58 user, I'm not prepared to wait for Zen/Skylake-E. I'll go with a 6700k and I'll probably keep it for many years. I doubt games will benefit from more than 4 cores for quite a few years again, given how things developed.
 
Freddie1980 said:
So about 20%, for ivy bridge users an 25% 30% for Sandy Bridge users.
Click to expand...

Hmm... I could be tempted. Sort of want an i7 for the HT (pretty sure Cities Skylines will benefit since it maxes my i5), and a decent clock-for-clock jump makes that a lot more compelling.

But coughing up for 32gb of ddr4 is going to hurt :(
 
Freddie1980 said:
So about 20%, for ivy bridge users an 25% 30% for Sandy Bridge users.
Click to expand...
Those numbers are just about high enough to justify an upgrade from SB for me, but ultimately the decision will come down to overclocking potential; really keen to see what people get out of Broadwell, so we have some idea what kind of headroom Intel's 14nm process currently has.
 
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