Intel Skylake / Kaby Lake

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386user

Member
Mar 11, 2013
66
0
16
a little bit worried about these skull canyon nucs sounding like jet engines..

on my broadwell nuc, the fans get pretty loud in games,etc
 

Sweepr

Diamond Member
May 12, 2006
5,148
1,142
131
Eurogamer reviews Intel's new mainstream quad-core. Includes BCLK overclock (4.51GHz) and RAM scaling results (minimum framerates @ recent titles). One of the best bang-for-the-buck right now.

Eurogamer: Intel Skylake: Core i5 6500 review

Synthetic benchmarks showed that overclocking our Core i5 6500 to 4.51GHz produced faster results than a 6600K running at an almost identical 4.5GHz. However, gaming benchmarks produced more variance.

Meanwhile, as expected, the dual-core i3 6100 drops back from the pack significantly, though the 4.4GHz overclock we achieved there throws up some interesting results - it offers around 85 per cent of the performance of the Core i5 6500, which makes us wonder how it would compare with the stock performance of the base-level i5 6400, which operates at a significantly lower clock-speed.

Core i5-6600K @ 4.5GHz scored 7.94 @ CB11.5 MT, while Core i5-6500 @ 4.51GHz scored 8.67.

Minimum framerates with different DDR4 speeds:



So we went back and re-benched the Core i5 6500 still further, keeping it at stock frequencies and running our Corsair Vengeance DDR4 at 2133MHz, 2666MHz, 3066MHz and 3200MHz - and for the 4.51GHz overclock, we also benched there at 2632MHz and 3196MHz (the closest we could get). Pay particular attention to Crysis 3, GTA 5 and The Witcher 3, where more of the benchmark sequences are CPU-bound. Processor frequency produces higher results here, not faster RAM. However, elsewhere, there are some fascinating results.

We'll zero in on one test in particular - The Witcher 3 - as a highlight. Comparing 2133MHz to 3066MHz, there's an 18 per cent average improvement without overclocking the CPU at all, rising to 21 per cent on the all-important lowest recorded frame-rate. Comparing the stock/3066MHz DDR4 result there with the 4.51GHz/2632MHz reading in the table reveals that memory bandwidth is actually more important there than overclocking the processor. Only by pairing the overclock with 3200MHz DDR4 do we actually push that result on. Now, results may vary with different latency timings on the RAM, but the main takeaway here is clear - more memory bandwidth can make a difference.

To fuel the RAM scaling discussion, not only The Witcher 3 but GTA V and Far Cry 4 saw a 15% boost in minimum framerate by going from DDR4-2133 to DDR4-3200 (stock). Really pains me to see some users testing these chips with 1866MHz RAM.


Conclusion:

Intel maybe didn't plan for things to happen this way, but the Core i5 6500 is a highly compelling buy for gamers. The unofficial overclocking has obviously received plenty of attention and can produce blistering results, but even at stock frequencies it's capable of some excellent performance.

www.eurogamer.net/articles/digitalfoundry-2016-intel-skylake-core-i5-6500-review

Couple of videos here:
- Core i5 6500 Review: Gaming Performance, Overclocking and More
- Core i5 6500 4.5GHz BCLK Overclock vs i5 6600K/i7 6700K Gaming Benchmarks
- Core i5 6500 CPU vs RAM Overclocking Gaming Benchmarks
 
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AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
Purley will only support up to 2666MHz for a single bank and up to 2133/2400MHz with Dual Bank.

Current DDR-4 JEDEC standard is 2133MHz at 1.2v and 15CL.
 

ShintaiDK

Lifer
Apr 22, 2012
20,378
145
106
You just post about speed migration over time. Not about standard.

Are you trying to tell me all the 2400Mhz in production and being sold is not JEDEC validated?
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
You just post speed migration.

Are you trying to tell me all the 2400Mhz in production and being sold is not JEDEC validated?

No server today uses more than 2133MHz DDR-4.

Also same happened with DDR-3, JEDEC standard was only up to 1600MHz. But we have up to 2667MHz or above in production. That doesnt mean those speeds are JEDEC standards.

Edit:

For example, take Kingston Server Memory. They ONLY have DDR-4 2133MHz

http://www.kingston.com/dataSheets/KVR21L15Q4_32.pdf
KVR21L15Q4/32
32GB 4Rx4 4G x 72-Bit PC4-2133

CL15 Load Reduced w/Parity 288-Pin DIMM


FEATURES
ValueRAM's KVR21L15Q4/32 is a 4G x 72-bit (32GB)
DDR4-2133 CL15 SDRAM (Synchronous DRAM) load reduced
w/ parity, 4Rx4, ECC, memory module, based on thirty-six 2G x
4-bit DDP FBGA components. The SPD is programmed to JEDEC standard latency DDR4-2133 timing of 15-15-15 at 1.2V.
Each 288-pin DIMM uses gold contact fingers. The electrical
and mechanical specifications are as follows:
 
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CHADBOGA

Platinum Member
Mar 31, 2009
2,135
832
136
Core i5-6600K @ 4.5GHz scored 7.94 @ CB11.5 MT, while Core i5-6600 @ 4.51GHz scored 8.67.
This was confusing the hell out of me until I went to the linked review and saw that it was the i5 6500 @ 4.51Ghz scoring 8.67
 

coercitiv

Diamond Member
Jan 24, 2014
6,400
12,857
136
Minimum framerates with different DDR4 speeds:





To fuel the RAM scaling discussion, not only The Witcher 3 but GTA V and Far Cry 4 saw a 15% boost in minimum framerate by going from DDR4-2133 to DDR4-3200 (stock).
The first jump from 2133 to 2666Mhz yields 2 FPS for 533Mhz.
The second jump 2666 - 3066 yields 4 FPS for 400Mhz.

Even diminishing returns are backwards these days.
 

DanielDi

Junior Member
Jan 11, 2016
3
0
0
The turbo clock is not much higher than the base clock. If the turbo is 4.2 GHz on it then I hope it's 4.2 GHz for all core loads as well by default. I would not want 4.2 GHz on just single core loads and no turbo when more than one core is used.
 

Edrick

Golden Member
Feb 18, 2010
1,939
230
106
Those are not for servers OR they will not work at those settings, they will revert to 2133MHz 15CL.

Go to DELL, HP etc and every DDR-4 Server is up to 2133MHz.

I think the best way to say this is that the Intel chipset used with the EP platform of Xeons does not support RAM overclocking and will default to the speed supported by the Xeon CPU (regardless of the speed you actually populate the banks with).

I will not argue what is standard and what is not, but what Intel Xeons support is the only thing that matters for that platform.
 

tornadog

Golden Member
Aug 6, 2003
1,222
0
76
I am still waiting for an updated bios for the Z170A Krait Gaming that actually allows BCLK overclocking on my i5 6500. Each time I see a report of success with that processor(like in the eurogamer article above), it makes me frustrated that I cannot do it!!!
 

zir_blazer

Golden Member
Jun 6, 2013
1,184
459
136
AnandTech on Gigabyte Motherboards for Xeons E3 V5 Skylake.
The article is dissapointing in the fact that only ONCE they mention that they're talking about Xeons E3. E3 is where the key is at - most people don't knows how many Xeons versions are, nor that five generations worth of Xeons E3 uses standard LGA 115x Sockets.
I'm dying to get proof if they are really better binned, the time is coming. And if its true than the previous generations were actually soldered instead of classic TIM, they would have been even better if Xeon overclocking would have been available before. That alone is a hefty advantage.
 
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IntelUser2000

Elite Member
Oct 14, 2003
8,686
3,785
136
nor that five generations worth of Xeons E3 uses standard LGA 115x Sockets.

That's changing in Skylake according to the Anandtech article, so it should be four generations.

It was inevitable, although they seem to be doing it to an extreme form nowadays. That is, segmentation.
 

zir_blazer

Golden Member
Jun 6, 2013
1,184
459
136
That's changing in Skylake according to the Anandtech article, so it should be four generations.

It was inevitable, although they seem to be doing it to an extreme form nowadays. That is, segmentation.
That's not changing. Skylake Xeons E3 still use the same LGA 1151 socket, just that they demand C Series Chipsets. That is know since the Xeons E3 V5 launch.
 
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