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Skylake-X (7800X) vs. Coffee Lake (8700K) - Requesting Opinions

post #1 of 17
Thread Starter 
I was going for a new build in October or November with a 7800X or a 7820X because I wanted to get back to a six core CPU and I wanted four channel memory The only reason I was thinking about a 7820X was because the base clock and turbo clock were higher than a 7800X.

Today I was reading about Coffee Lake 8700K and that it was a six core CPU, but z370 is only two channel memory.

I would like some opinions regarding 7800X / x299 vs. 8700K / z370.

As far as the motherboard for x299 I would probably go with a Asus Rampage VI Extreme or Apex.

As far as a motherboard for a 8700K I would probably go with a high end Asus ROG board like a Maximus Extreme if one is released for z370.

Edit, I should add that one more main reason I wanted a new build was because I want a 1080Ti, but I do not want to put one in my existing build in my signature. If I am going for a 1080Ti I want to also get a new CPU to go with it since my 4700K is four years old.
Edited by idahosurge - 9/12/17 at 4:33pm
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
4770K @ 4.7GHz / 4400MHz Asus Sabertooth Z87 Gigabyte GTX 780 OC 8GB G.Skill Trident X 9-11-11-31-1T @ 2400MHz 
Hard DriveOptical DriveCoolingOS
OS SSD 840 Pro 256GB / FSX SSD 840 Pro 256GB LG DVD Thermalright SB-E x2 Win7 Ult 64b 
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Viewsonic VP2655wb 25.5" IPS LCD Logitech Wireless EX1110 w/Mouse Corsair AX860i CM HAF-X 
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My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
4770K @ 4.7GHz / 4400MHz Asus Sabertooth Z87 Gigabyte GTX 780 OC 8GB G.Skill Trident X 9-11-11-31-1T @ 2400MHz 
Hard DriveOptical DriveCoolingOS
OS SSD 840 Pro 256GB / FSX SSD 840 Pro 256GB LG DVD Thermalright SB-E x2 Win7 Ult 64b 
MonitorKeyboardPowerCase
Viewsonic VP2655wb 25.5" IPS LCD Logitech Wireless EX1110 w/Mouse Corsair AX860i CM HAF-X 
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post #2 of 17
Is there a reason you need to additional memory bandwidth a Skylake-X system would give you? You would only come out ahead if you're doing RAM-intensive tasks. Otherwise you're better off going with Coffee Lake, at least as far as return on investment.
post #3 of 17
Thread Starter 
I do not know that I actually need the bandwidth. I do need 16GB's of memory to get ready for SC, assuming that it actually gets to Beta. My current system only has 8GB and it makes playing the current releases of SC slow at times since the memory has to keep swapping out.

I do not like to upgrade my current system, I would rather build a new one. Since I need 16Gb's of memory, wanted the latest GPU and wanted a six core CPU I started looking at Skylake-X early this year since it was coming out.

As far as four channel memory, earlier this year my thought was if I was upgrading I might as well upgrade to the latest. I still think that. The only reason I started considering Coffee Lake is because the 8700K is six core.

As far as playing high end games and considering new releases, does four channel DDR4 memory really add that much?

The one drawback of four channel memory that I know of is you need four sticks vs two sticks for two channel. When overclocking a CPU it is harder to overclock a system with four sticks than two sticks. Or in the case of x58, six sticks vs. three sticks. That is what I have read in these forums over the years anyway.
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
4770K @ 4.7GHz / 4400MHz Asus Sabertooth Z87 Gigabyte GTX 780 OC 8GB G.Skill Trident X 9-11-11-31-1T @ 2400MHz 
Hard DriveOptical DriveCoolingOS
OS SSD 840 Pro 256GB / FSX SSD 840 Pro 256GB LG DVD Thermalright SB-E x2 Win7 Ult 64b 
MonitorKeyboardPowerCase
Viewsonic VP2655wb 25.5" IPS LCD Logitech Wireless EX1110 w/Mouse Corsair AX860i CM HAF-X 
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My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
4770K @ 4.7GHz / 4400MHz Asus Sabertooth Z87 Gigabyte GTX 780 OC 8GB G.Skill Trident X 9-11-11-31-1T @ 2400MHz 
Hard DriveOptical DriveCoolingOS
OS SSD 840 Pro 256GB / FSX SSD 840 Pro 256GB LG DVD Thermalright SB-E x2 Win7 Ult 64b 
MonitorKeyboardPowerCase
Viewsonic VP2655wb 25.5" IPS LCD Logitech Wireless EX1110 w/Mouse Corsair AX860i CM HAF-X 
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post #4 of 17
Memory bandwidth won't add very much to gaming performance. My first response was done on my phone so I didn't see what was in your system. You don't really benefit very much by switching platforms since yours is still quite modern. If you have two open RAM slots, it would make more sense to just add RAM to your current system. Your Haswell CPU is still very relevant.

Stress on the integrated memory controller, to my knowledge, doesn't hinder overclocking as much as it once did. It's common practice to have open RAM slots when you initially build to leave room for expansion. Overall, you might have a slightly lower peak overclock with more RAM. If you actually need more RAM, you're probably not that worried about sacrificing 100 to 200 megahertz.

If you have your heart set on moving on from Haswell, Coffee Lake will be a decent upgrade if you can make use of the additional multi-threaded performance. If you can't, you're basically spending a lot of money for a very minor single-threaded upgrade.
post #5 of 17
Id liek to know actually too because i had a horrid experience with a ryzen and now im rebuilding my pc and im interesting in those cpus as well.

Tbh 7800x will be a lot cheaper once 8700x is out and their performance iwll be comparable i think , bit better in games for 8700 a bit better for multitask for skylake
post #6 of 17
Coffee Lake should have very little, if any at all, impact on Skylake-X pricing. It's a different segment of the market. Even if you can get an i7-7800X for less than an i7-8700K, that doesn't make it a better value. You still have to take into account the motherboard and RAM. Whatever you're "saving" on the CPU you will spend on the motherboard and/or RAM. Intel has a track record for not adjusting prices when releasing new products. I don't know why people think Intel plans on changing things now.
post #7 of 17
Depends where you live. In usa or other big markets this is true , because there is a demand for everything .In smaller countries though they have plenty of stock left because demand is limited.

so motherboards epsecially aree loosing a lot of their initial price once a new product appears.

For instance asus x370 hero had . in my country , a cost of around 280 euros around 300 dollars , a month after threaripper released , cost is 230 euros and falling. Taichi went form 260 to 215 in a month and had an initial price of 300 few months ago.

Same with z270 they have lost 50% those last few months after ryzen released
post #8 of 17
How long is the 1151 socket going to be in market for? Are they going to continue making cpu's for that socket or is it end of life and would it be better to go with the 2066 socket for future proofing?
I'm in the market for an upgrade so would like to consider all.

Chow:)smile.gifsmile.gif
post #9 of 17
Quote:
Originally Posted by Kratos011 View Post

How long is the 1151 socket going to be in market for? Are they going to continue making cpu's for that socket or is it end of life and would it be better to go with the 2066 socket for future proofing?
I'm in the market for an upgrade so would like to consider all.

Chow:)smile.gifsmile.gif
Which socket LGA 1151 are you talking the old one or the new one?
And yes there are two socket LGA 1151 and old CPU´s wont work on new motherboards and vice versa

Coffee lake aka the 8 series of CPU´s and the Intel 3xx series of chipsets are the new LGA 1151 and the 6 and 7 series of CPU´s and 1xx and 2xx series of chipset where the old LGA 1151
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(27 items)
 
  
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Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
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LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
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Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
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Seravee
(27 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD60EZRX  WD Red WD80EFZX 8TB  Seagate Ironwolf Pro 10 TB 
Optical DriveCoolingCoolingOS
LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorMonitorKeyboardPower
Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone EMP Roccat Sense Metor Sennheiser HD 598 
AudioAudioAudioAudio
Onkyo TX NR646  Dali Opticon Vokal x2 Dali Opticon 2 x2 Dali Opticon 1 
AudioOtherOther
Dali E12 F Subwoofer CableMod E series PSU cable set CableMod LED Strips 
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post #10 of 17
Quote:
Originally Posted by Kratos011 View Post

How long is the 1151 socket going to be in market for? Are they going to continue making cpu's for that socket or is it end of life and would it be better to go with the 2066 socket for future proofing?
I'm in the market for an upgrade so would like to consider all.

Chow:)smile.gifsmile.gif
Intel typically supports two generations with a chipset. Skylake has only seen two optimizations. The next step should be a die shrink. We'll see a new series of chipsets, but it would make sense if 300-series chipsets also support those processors. Neither socket is future-proof, but X299 has more options and should have a longer lifespan. I'm considering going X299 since the only meaningful difference between the two processors in question is cache.
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