Intel Skylake i7 6700k, i5 6600k vs. Haswell and Sandy Bridge Processors – 125% Brutal

futuramafryWelcome to another great article at Custom PC Guide.net, a place where I sometimes give you questionable advice and often dangerous tips so you can build yourself a custom computer that could explode like none ever done  efore. That’s right, no one, has ever done before. Because they literally can’t even.

Now before continuing to waste more of your time, I’d like to quickly introduce you the latest, hottest news from last month : the Intel Skylake processors. This is the newest addition to the already crowded family of modern Intel core-i CPUs as of 9/2015.

Back in the day, I thought we were going to have Pentium 4 then 5, 6, 7, etc…but instead now we have 2500k, 4690k, 4590S, 3570K, 5775C, 5820k, 6600k, 3960X along with all the socket changes from 775, 1366, 1156, 1155, 1550, 1551 to 2011.

If anything, that reminds me so much of BMW naming scheme. It’d be really wonderful if it wasn’t so terrible.

Hence in the next 15 seconds, I’m gonna simplify the Intel mainstream processor family tree right here; it should help us clear up any confusion and bad qi in the air, especially regarding where Skylake stands in this entire shenanigan. After that, we’ll take one more look to determine whether it’s really worth the attention.

As you may know, Intel follows a roadmap model called tick-tock.

In layman term, a tock for Intel cpus means new micro-architecture and a tick means the evolution of that micro-architecture by shrinking the its die size. In Pokemon term, tock is your Gloom. Tick is when you throw it a Sun stone and it becomes Bellossom.

A full cycle of tick-tock usually lasts 1.5 years. However, Intel has recently adapted a small additional step in between this tick-tock cycle known as “Refresh”, where small updates will be contributed to the current existing processor line-up so they can take more of yo money.

The Differences between All Asus Mainstream Z170 Motherboards.

Now look at this pretty chart that I personally hand-crafted just for you. Please proceed to feel special.

Roadmap

Tick

Tock

Tick

Tock

Tick

Tock

Codename

1st Gen
71-6qFQHhZS._SL1176_
32nm
Westmere
2nd Gen
51YgCjLnnRL._AC_UL320_SR254,320_
32nm
Sandy Bridge
3rd Gen
$_75
22nm
Ivy Bridge
4th Gen
intel-core-i7-4770k-box-shot_400-Wide
22nm
Haswell
5th Gen
cpu-int-5775r
14nm
Broadwell
6th Gen
intel_bx80662i56600k_6th_gen_i7_6600k_1176282
14nm
Skylake

Socket

1156 / 136611551155 / 20111150 / 2011-v31151

Example CPUs

i7-990X
i5-650
i7-3960X
i7-2600k
i5-2500k
i7-4960X
i7-3770K
i5-3570K
i7-5960X
i7-5820K
i7-4790k
i7-4770k
i5-4670K
i7-5775C
i5-5675C
i7-6700K
i5-6600K
www.custompcguide.net

The tock, usually brings out good stuffs. According to history, it brought us the i7-2600k which was a phenomenal processor. People overclocked the love out of it. That generation also gave AMD a run for their money. Then last year, we got the i7-4770k –also was another great success for Intel. All that set a high expectation for Skylake. Time for us to dive into the techs.

How Is Skylake Compared to Haswell and Ivy/Sandy Bridge ?

452540_818567_01_front_zoomFirst off, let’s start with the bad news.

Both the debut K‘s version of Skylake requires the new LGA-1151 socket. That means you can’t use your 1150 mobo. Average news is that it’s compatible with your old 1150 processor cooler. Well, that’s better than nothing, right?

Good news is for those who waited for DDR4 memory but didn’t want to sell your kids which you secretly hope was possible to buy an LGA-2011 v3 set, now you can get it with Skylake at a lower cost.

For the last few months, you’d find most local retailers only offered Haswell processors in their inventory such as the 4690K, 4790K, etc… The reason I brought this up is because Haswell is based on 22nm die size, while its successor — the lesser known, the forgotten child, the sad man Broadwell is based on the newer 14nm die size (see chart above).

Surprisingly, Broadwell only offers the i7-5775C and i5-5675C for the desktop market, the rest are implemented in laptops and NUCs. I could guarantee 80% of the 96% people you ask wouldn’t even know these processors even exist. Broadwell was the hero we asked for, not the one we deserved. The whole Broadwell generation for desktop was ignored completely.

Anyway, as the 14nm Skylake is ready, we have officially taken the right direction towards (supposedly) more powerful and more energy-efficient CPUs since the i5 4690K and i7 4790K.


Now, time for a TL;DR !

  1. 451883_804856_02_front_zoomBoth the i5 6600k and i7 6700k has the maximum TDP of 91W, versus 84W of i5 4670K and i7 4770K or 88W of i5 4690K/i7 4790K.
  2. So Skylake actually runs hotter than its predecessors. When overclocked, the TDP could easily hover above 100W.
  3. Even though Skylake has higher TDP, it’s a better than average overclocker. The i7 6700K could hit 4.6 GHz @ 1.4V with little effort, still not as good as 4.6 GHz @ 1.3V of the i7 2600k. There is room for 4.8 Ghz but the excessive heat will degrade the CPU long before the voltage takes any real damage.
  4. The i5 6600k runs at the same clock speed as 4690K (3.5 GHz ~ 3.9 GHz), that is small bump from 4670K (3.4 GHz ~ 3.8 GHz).
  5. 451883_804856_03_front_zoomThe same pattern applied for Skylake i7. The 6700k and 4790k both operates at 4.0 GHz with turbo boost up to 4.4 GHz, while the older 4770k runs at 3.5 GHz ~ 3.9 GHz.
  6. Multi-plane Overlay in HD 530 is a new feature allows more efficient image rendering between the RAM and 3D engine without the need to involve the iGPU. You may notice a smoother screen transition on Windows 8.1 and newer version.
  7. No more VGA/D-Sub output supported. No native HDMI 2.0 either. But you can convert DisplayPort 1.2 to HDMI 2.0 using an active adapter. Some motherboards may do the conversion for you internally, which gives you HDMI 2.0 output right out of the box.
  8. Z170-controllerBus-width between CPU and Z170 controller, known as Direct Media Interface has been upgraded from 2.0 to 3.0. This essentially increases data transfer rate from 2GB/s to 3.93GB/s.
  9. Z170 controller has a total of 26 input-output ports to share with all the PCIe lanes, networking chipset, audio controller, USB and SATA ports. The older H/Z97 has only 18. That means you have more PCIe 3.0 slots with native support for SLI or tri-Crossfire, your RAID setup could involve more drives including M.2 or SATA Express, you might even have more than a couple of USB 3.1 Gen 1 (5 Gbps) available at hand.

In summary, Skylake is the great replacement for Sandy Bridge. If you are still rocking the 2600k or 2500k, you will find a performance gain between 30%-45% with Skylake due to both the new 14nm architecture and DDR4 memory. Though you’ll have a smaller margin with Haswell, sitting less than 12% gain in processing power.

Intel Core i5 Comparison

Intel i5-4690K

$_75

  • Die Size

    22nm

  • DMI

    2.0

  • Cores

    4

  • Threads

    4

  • L3 Cache

    6MB

  • Base Clock

    3.5 GHz

  • Turbo Boost

    3.9 GHz

  • iGPU

    HD Graphics 4600

  • iGPU Clock

    350 MHz / 1.2 GHz

  • TDP

    88W

  • DDR3 Native Clock

    Dual-Channel 1600 MHz

  • DDR4 Native Clock

    Not Supported.

  • LGA Socket

    1155

  • PCI Express

    3.0

Intel i5-4670K

$_75

  • Die Size

    22nm

  • DMI

    2.0

  • Cores

    4

  • Threads

    4

  • L3 Cache

    6MB

  • Base Clock

    3.4 GHz

  • Turbo Boost

    3.8 GHz

  • iGPU

    HD Graphics 4600

  • iGPU Clock

    350 MHz / 1.2 GHz

  • TDP

    84W

  • DDR3 Native Clock

    Dual-Channel 1600 MHz

  • DDR4 Native Clock

    Not Supported.

  • LGA Socket

    1155

  • PCI Express

    3.0

Intel i5-3570K

51YgCjLnnRL._AC_UL320_SR254,320_

  • Die Size

    22nm

  • DMI

    2.0

  • Cores

    4

  • Threads

    4

  • L3 Cache

    6MB

  • Base Clock

    3.4 GHz

  • Turbo Boost

    3.8 GHz

  • iGPU

    HD Graphics 4000

  • iGPU Clock

    650 MHz / 1.15 MHz

  • TDP

    77W

  • DDR3 Native Clock

    Dual-Channel 1600 MHz

  • DDR4 Native Clock

    Not Supported.

  • LGA Socket

    1155

  • PCI Express

    3.0

Intel i5-2500k

51YgCjLnnRL._AC_UL320_SR254,320_

  • Die Size

    32nm

  • DMI

    1.0

  • Cores

    4

  • Threads

    4

  • L3 Cache

    6MB

  • Base Clock

    3.3 GHz

  • Turbo Boost

    3.7 GHz

  • iGPU

    HD Graphics 3000

  • iGPU Clock

    850 MHz / 1.1 GHz

  • TDP

    95W

  • DDR3 Native Clock

    Dual-Channel 1333 MHz

  • DDR4 Native Clock

    Not Supported.

  • LGA Socket

    1155

  • PCI Express

    2.0

Intel i5-6600K

intel_bx80662i56600k_6th_gen_i7_6600k_1176282

  • Die Size

    14nm

  • DMI

    3.0

  • Cores

    4

  • Threads

    4

  • L3 Cache

    6MB

  • Base Clock

    3.5 GHz

  • Turbo Boost

    3.9 GHz

  • iGPU

    HD Graphics 530

  • iGPU Clock

    350 MHz / 1.15 GHz

  • TDP

    91W

  • DDR3 Native Clock

    Dual-Channel Low-voltage 1600 MHz

  • DDR4 Native Clock

    Dual-Channel 1866/2133 MHz

  • LGA Socket

    1151

  • PCI Express

    3.0

Intel Core i7 Comparison

Intel i7-4790K

intel-core-i7-4770k-box-shot_400-Wide

  • Die Size

    22nm

  • DMI

    2.0

  • Cores

    4

  • Threads

    8

  • L3 Cache

    8MB

  • Base Clock

    4 GHz

  • Turbo Boost

    4.4 GHz

  • iGPU

    HD Graphics 4600

  • iGPU Clock

    350 MHz / 1.25 GHz

  • TDP

    88W

  • DDR3 Native Clock

    Dual-Channel 1600 MHz

  • DDR4 Native Clock

    Not Supported.

  • LGA Socket

    1155

  • PCI Express

    3.0

Intel i7-4770K

intel-core-i7-4770k-box-shot_400-Wide

  • Die Size

    22nm

  • DMI

    2.0

  • Cores

    4

  • Threads

    8

  • L3 Cache

    8MB

  • Base Clock

    3.5 GHz

  • Turbo Boost

    3.9 GHz

  • iGPU

    HD Graphics 4600

  • iGPU Clock

    350 MHz / 1.25 GHz

  • TDP

    84W

  • DDR3 Native Clock

    Dual-Channel 1600 MHz

  • DDR4 Native Clock

    Not Supported.

  • LGA Socket

    1150

  • PCI Express

    3.0

Intel i7-3770K

51PLu0g6oOL._SY300_

  • Die Size

    22nm

  • DMI

    2.0

  • Cores

    4

  • Threads

    8

  • L3 Cache

    8MB

  • Base Clock

    3.5 GHz

  • Turbo Boost

    3.9 GHz

  • iGPU

    HD Graphics 4000

  • iGPU Clock

    650 MHz / 1.15 MHz

  • TDP

    77W

  • DDR3 Native Clock

    Dual-Channel 1600 MHz

  • DDR4 Native Clock

    Not Supported.

  • LGA Socket

    1155

  • PCI Express

    3.0

Intel i7-2600K

51PLu0g6oOL._SY300_

  • Die Size

    32nm

  • DMI

    1.0

  • Cores

    4

  • Threads

    4

  • L3 Cache

    8MB

  • Base Clock

    3.4 GHz

  • Turbo Boost

    3.8 GHz

  • iGPU

    HD Graphics 3000

  • iGPU Clock

    850 MHz / 1.35 GHz

  • TDP

    95W

  • DDR3 Native Clock

    Dual-Channel 1333 MHz

  • DDR4 Native Clock

    Not Supported.

  • LGA Socket

    1155

  • PCI Express

    2.0

Intel i5-6700K

451883_804856_01_front_zoom

  • Die Size

    14nm

  • DMI

    3.0

  • Cores

    4

  • Threads

    8

  • L3 Cache

    8MB

  • Base Clock

    4 GHz

  • Turbo Boost

    4.2 GHz

  • iGPU

    HD Graphics 530

  • iGPU Clock

    350 MHz / 1.15 GHz

  • TDP

    91W

  • DDR3 Native Clock

    Dual-Channel Low-voltage 1600 MHz

  • DDR4 Native Clock

    Dual-Channel 1866/2133 MHz

  • LGA Socket

    1151

  • PCI Express

    3.0

Cinebench R10 – Benchmark
Cinebench R10 – Single Core
i7 6700K8990 pts
i7 4790K8801 pts
i5 6600K8412 pts
i7 4770K6983 pts
i7 2600K6411 pts
i7 9203926 pts

Memory

Skylake supports both DDR3 Low-voltage and DDR4 memory, up to 64GB. The decision to have DDR3L slots available depends on the motherboard manufacturers; I’d assume we will have more motherboards with only DDR4 at this time and age –as the pc market always leans towards newer, faster things despite the early steep cost.

However, the most significant benefits DDR4 has over DDR3 are actually power consumption and video conversion in pretty much all benchmarks that my minions have tested.

Some may argue that the DDR4 is much faster than DDR3 and that is true. As DDR3 caps at 2133 MHz, while that is just the starting speed for DDR4, which it then could go as high as 3200MHz. However, there is a drawback because life isn’t fair and you can never win the lottery.

As you know it, when the memory bandwidth increases so does its response time.

A decent DDR3 kit runs at 1866 MHz with CL9 (13.50 nanoseconds), compared to DDR4 at 2133 MHz sitting on CL15 (14.06 nanoseconds), or 3200 MHz at CL16. It turns out, a pair of DDR4-2133 CL15’s performance is almost identical to a pair of DDR3-1866 CL9.

I will be seriously honest here, DDR4 is actually less than half a second faster every now and then in daily tasks and you won’t notice the differences easily. Unless it’s a very high-end kit.

Integrated GPU HD 530

Intel has come a long way in making built-in GPUs faster. It does some serious damage to AMD’s APU lineup, even when the competitor has better pricing and the ability to crossfire with a dedicated graphics card.

Since the last successful performance break-through of the HD 3000 to HD 4000, it appears Intel totally loves to toy with the idea of creating more powerful on-die GPU. For every generation passed, frame rate average increases 10% to 40% more than the last.

Today Skylake HD 530 belongs to Intel Gen9 iGPU family, boasts the max clock frequency at 1.15 GHz. That’s a little slower than previous gens at 1.2 GHz (Haswell) or 1.25 GHz (Haswell Refresh). All these iGPU can utilize up to 1.7GB of shared system memory, except Skylake can also benefit from the greater frequency of DDR4. In some games, the HD 530 is twice to three times faster than HD 3000 (i7-2600k), half of the credit goes to the RAM.

Unfortunately, the HD 530 still isn’t much faster than HD 4600; slower in many games even –plus it’s 1/2 the performance of GTX 750 that runs for about $100. So the question is, will you sit well with lower power consumption for an average gaming quality ?

p.s The iGPU name HD 530 is shortened to minimize confusion (instead of HD 5300) according to Intel; because there is already an Iris Pro 5000 series somewhere in the line. That is great because first time pc builder who couldn’t tell the difference between GT 610, NVS 420 or R9 370, now could add HD 530 to their WTF list.

Intel HD 530 – GTA V – 720p – Medium
NVIDIA GTX 750138 fps
R7 250106 fps
HD 530 (6700K)79 fps
Radeon HD 667079 fps
HD 530 (6600K)77 fps
A10 7850K55 fps
Radeon HD 645030 fps

More in-game benchmarks by AnandTechTomshardware

Conclusion

For those who have loved and adored the 2500k or 2600k, it might be about time to say bye to your wallet and bring home Skylake. For everyone else, you are good with what you already have. Unless the lower power consumption, DDR4, HD 530 and Z170 are something that you could fap to, erm, or benefited from; then this is it!

Leave a Reply

15 Comments on "Intel Skylake i7 6700k, i5 6600k vs. Haswell and Sandy Bridge Processors – 125% Brutal"

Terry

Where does the i5 6500 fit into this discussion. I’m not building for a gaming machine. I’m looking at an Asus Sabertooth Z170 with the i5 6500 and 16 Gb DDR4 RAM.

very nice info by the way. . but There’s something wrong bro, hashwell is not using socket LGA 1155 that socket only used for 3th gen core i but LGA 1150 is correct info for hashwell socket, just correcting your missing info. . .

Storris

Best. Tech. Review. Ever.

With my decade old Q6600 (+8GB RAM, +AMD7850-2GB) now bumping against the stops on every application, I think a nice Skylake is in order; I’ve got to upgrade at some point, right?

The real question is, i5-6600 or i7-6700?

Radiera

“For those who have loved and adored the 2500k or 2600k, it might be about time to say bye to your wallet and bring home Skylake”
I loled. 2600k@4,4 is still good for gaming. Some people who are not very technical might actually believe your bullshit.

I only went with skylake because of the smexy new boxes :P
Probably could’ve benefitted reading this first, but whatever.

Matthew

What if I’m upgrading from a c2q 2.66, gtx 570, 8gb RAM and a 250 ssd?

Crimson

why not skylake since its the “future” and stay on the older gen mobo and cpu

Crimson

The thing is. If you don’t have any occasion at AL and you’re going to build one now. With what would you go? Haswell or skylake?

Thanks for shining your light on Skylake and Haswell, much appreciated :-).

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