Who's buying Skylake-X? (You may now change your vote)

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IndyColtsFan

Lifer
Sep 22, 2007
33,656
687
126
Which CPU/mobo?

The 7820x and either a Gigabyte Gaming 7/9 or one of the Asus Rampage boards. I'll probably behave and stick to my original plan of waiting to see what Coffee Lake has to offer before I buy anything, but behaving is so hard when I read these forums multiple times per day.
 
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Muadib

Lifer
May 30, 2000
17,965
854
126
The 7820x and either a Gigabyte Gaming 7/9 or one of the Asus Rampage boards. I'll probably behave and stick to my original plan of waiting to see what Coffee Lake has to offer before I buy anything, but behaving is so hard when I read these forums multiple times per day.
Tell me about it ColtsFan. Sometimes I miss the single life.

Sent from my SAMSUNG-SM-G935A using Tapatalk
 

Edrick

Golden Member
Feb 18, 2010
1,939
230
106
7820X only has one AVX-512 port. 7900X has two.

I realize that is what most reviewers are saying, but the numbers are not matching expected results. I am getting close to double the GFlops with AVX-512 over AVX2 which would indicate 2 ports.
 

Topweasel

Diamond Member
Oct 19, 2000
5,436
1,655
136
I'm not fudging any numbers, nor did I intend to say anything misleading. The plan was always to OC a 1700, I would not buy an 1800X. For max OC on a 1700, I wanted a quality board with beefy VRM. I use a ton of SATA ports, USB 3.0/3.1, etc. On top of that I keep my PC's for 6ish years, so I like the fully featured boards - more than once in the past I have been glad to see that my mobo had a certain port or feature that I didn't even consider when buying it, but because I bought a deluxe board I was covered. Also, Ryzen will support the AM4 socket for the next two iterations. A better board is more likely to be widely supported and have fewer issues with whatever Ryzen 2 and Ryzen 3 end up being.

Locally I do no have access to AS Rock boards, so for me it's ASUS, MSI, or Gigabyte, and I like ASUS from previous experience.

Understandable that's why I asked. I am still not sure the C6H is the real solution. It was just a curiosity because that seems to be the goto pricing on the AM4 side when referencing an AM4 solution cost when it is on the more extreme end of pricing for X370. Me personally the two boards I would look at is the Taichi (which you can't get sadly) or Gaming K7. 33% less expensive. But again I was more curious because you aren't the first or last that will use it, and before you didn't state why none of the other solutions wouldn't work.

What I care about is the fastest possible combination of single and multi core performance, without getting into delidding and extreme OC stuff. That is the 7820X, and the $500 CAD between the AMD build I was going to do and the Intel build I am going to do is something I am willing to pay for the difference. I recognize the amazing value that Ryzen is, and almost bought it, but it's not enough for me this time around. Further to that I would have to factor into the Ryzen price upgrades to Ryzen 2 and/or Ryzen 3 to match the performance of the 7820X, since I wanted 8 cores at around 4.5 GHZ+ and I don't know which future Ryzen version would get me there.
Like I said earlier I think you choose the perfect CPU for your workload. So I am not even suggesting you made a bad choice. The implication I may have made, which I wasn't really trying to do was, that people have the tendency to mess with numbers to make themselves feel better about their choice, especially since the cost of that setup is decently higher than the opposing choice. Which one like yourself wouldn't have needed to do. Your workload would work best with a 7820. In fact most people needing a 8 core CPU would be better off with a 7820 over a Ryzen if money was no object. We can talk value until we are blue in the face but the end of the day is if you have an important workload, you need get the best you can for the money you can afford. As for Ryzen 2k, they are moving to from LPP (Low Power Process) to LP (Lead Process) for the 14nm refresh. Will it keep up with the next solution from Intel? I don't know, but if ~4GHz is the limit now, then I would think the refresh would clock faster.
 

IndyColtsFan

Lifer
Sep 22, 2007
33,656
687
126
Tell me about it ColtsFan. Sometimes I miss the single life.

Sent from my SAMSUNG-SM-G935A using Tapatalk

The wife is telling me to buy. I'm waffling between the 7820x and Coffee Lake and if I go 7820, should I get a delidded CPU from Silicon Lottery? I may also build a Threadripper box as well, but I don't expect it to outperform the equivalent Intel. I hope it is cheap enough to force an Intel price drop though.

My strategy has always been to go for the fastest single core performance but that may change this time around.
 

SexyK

Golden Member
Jul 30, 2001
1,343
4
76
Well, got my new 7900X build together and I'm impressed, but with some minor caveats. I swapped out my water-cooled Titan X (Maxwell) for the EVGA 1080 SC and am currently using my custom loop for the CPU only. The loop has a total of 5x120 radiators, so the heat output of the CPU is no issue, even at 4.6GHz all-core. There are spikes under some workloads that could likely be evened out with a de-lid. Not sure I have the appetite for that at this point, though.

Overall power consumption under normal workloads (e.g. non-stress tests) is comparable or lower than the outgoing 3930K setup. Stress tests push power consumption and temperatures beyond the old setup by a healthy margin and there is some evidence that power draw may be high enough to lead to some intermittent throttling from the power delivery system - more investigation needed on that point. If that is the case and water blocks are released for the ASUS board, I may consider adding that to the loop to see if that resolves the issue. In the meantime, I am going to try to get more airflow over the power delivery components and see where that gets me.

In terms of performance, gaming has been more than adequate (if not absolute top-of-the-heap), and encoding and photo processing performance is outrageous. No complaints.

That said, here are my caveats:
  • When next-gen video cards are released I will probably upgrade and add the card back into the loop (going back to an air cooled GPU is painful, but I don't want to spend the money on a block for the 1080). Not sure if my current loop can handle the 7900X and a top-tier next gen GPU without really cranking the fans.
  • Overall platform stability is not quite up to par with the X79 platform at this point. Even at stock clocks there has been some quirky behavior. Could be that further BIOS updates will address this issue.
  • NVMe performance isn't quite up to my expectations. Will need to do some tinkering to try to get to the bottom of this.
Finally, a more general comment. As someone who has been building machines and overclocking since the mid-90s, it's really pretty unfathomable how much complexity has been added to the process over the last few generations. Understanding the interactions of the hundreds of settings available in the BIOS is daunting unless you have a significant amount of time to dedicate to it. I appreciate that those settings are there for those who are dedicated to squeezing out every ounce of performance, but for someone with limited time to dedicate to this hobby, it can be very frustrating to debug and stabilize a high-end overclock.

Given the very very limited amount of free time I have at this point, as well as the impressive out-of-the-box performance, it's bordering on not worth it to even try to push everything to the max. Maybe I'm just old.
 

IEC

Elite Member
Super Moderator
Jun 10, 2004
14,373
5,084
136
It's quite possible you are seeing intermittent throttling with your OC. See Tom's Hardware's article released yesterday:
http://www.tomshardware.com/reviews/-intel-skylake-x-overclocking-thermal-issues,5117.html#3

(1) Skylake-X at its stock settings can barely be cooled during normal operation. This is due to its power consumption being extremely high in some situations, and its thermal paste keeping waste heat from being dissipated effectively.

(2) There’s barely any room for enthusiasts to overclock. Also, many motherboards limit Skylake-X CPUs further due to poor design choices, such as insufficient VRM cooling. Those looking for high overclocks need not apply.
 
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Timmah!

Golden Member
Jul 24, 2010
1,468
743
136
Sent from my SAMSUNG-SM-G935A using Tapatalk[/QUOTE]
You guys are making my trigger finger itchy to push the "Buy now" button.....

Same here. I desire to indulge myself so much with 7900x, but the mixed reviews just put me off and make me feel indifferent. If i have to spend money for a custom loop or bigger and more expensive AiO (despite already having one, not even year old), then i might as well wait for the 12 core, hoping for it to be soldered, thus fine with with my current AiO) and those additional 200 EUROs spend as well there. But then again it may happen that i will wait that month and in the end find out no solder for 7920x either, therefore the same issues (if not bigger, cause of more cores), or that it has been postponed to later release like supposed October)....

Bottom line, Intel dropped massive ball with this and its preventing me from getting my instant gratification :-(

Tell me about it ColtsFan. Sometimes I miss the single life.

Sent from my SAMSUNG-SM-G935A using Tapatalk

Yeah, dont be. While i want shiny new hardware for myself, i would happily spend that grand on whatever the girl of my choice would wish, instead. If only she could appreciate that
 

lobz

Platinum Member
Feb 10, 2017
2,057
2,856
136
Sent from my SAMSUNG-SM-G935A using Tapatalk


Same here. I desire to indulge myself so much with 7900x, but the mixed reviews just put me off and make me feel indifferent. If i have to spend money for a custom loop or bigger and more expensive AiO (despite already having one, not even year old), then i might as well wait for the 12 core, hoping for it to be soldered, thus fine with with my current AiO) and those additional 200 EUROs spend as well there. But then again it may happen that i will wait that month and in the end find out no solder for 7920x either, therefore the same issues (if not bigger, cause of more cores), or that it has been postponed to later release like supposed October)....

Bottom line, Intel dropped massive ball with this and its preventing me from getting my instant gratification :-(



Yeah, dont be. While i want shiny new hardware for myself, i would happily spend that grand on whatever the girl of my choice would wish, instead. If only she could appreciate that [/QUOTE]
You mean if only she also wished the 7920X to be soldered right?

Sent from my VTR-L09 using Tapatalk
 

GoNavy1776

Member
Jul 7, 2017
52
8
41
Im telling you guys... Wait like 3 more weeks. Threadripper will be finalized and we may see another knee jerk Intel reaction and a price drop might happen. To me with another big boy HEDT cpu about to drop its an idiotic time to purchase an higher end x299 chip. Unless you totally are committed and informed then of course spend your dollars.
 

IndyColtsFan

Lifer
Sep 22, 2007
33,656
687
126
Im telling you guys... Wait like 3 more weeks. Threadripper will be finalized and we may see another knee jerk Intel reaction and a price drop might happen. To me with another big boy HEDT cpu about to drop its an idiotic time to purchase an higher end x299 chip. Unless you totally are committed and informed then of course spend your dollars.

Yeah, I'll wait and Timmah brings up another good point - what if Intel drops a soldered 12 core in August? Like him, the 10 core was my original target but I was horrified by the reviews and gave up on it. With any luck, TR will force a price war and Intel will have to solder the 12+ core CPUs.
 
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Timmah!

Golden Member
Jul 24, 2010
1,468
743
136
Im telling you guys... Wait like 3 more weeks. Threadripper will be finalized and we may see another knee jerk Intel reaction and a price drop might happen. To me with another big boy HEDT cpu about to drop its an idiotic time to purchase an higher end x299 chip. Unless you totally are committed and informed then of course spend your dollars.

After recent events another Intel´s kneejerk reaction would not surprise me, then again, they dont exactly have history of dropping their prices in a kneejerk manner, do they? Did not bother to price drop BW-E line-up either, even though it was pretty much for everyone to see that Ryzen is more or less on par with it for half the price... so i am not holding my breath. And even if they dropped the price eventually, i would expect it to happen the moment they start selling those 14,16,18C chips, rather than when Threadripper drops.

Other than that, you are clearly right. This is not a good time to buy, for all the aforementioned reasons. But for me, this time around, its not about that i need it, i just want it, cause hardware enthusiasm, but i guess no need to explain that on these boards Anyway, its difficult to hold on and wait any further, especially given the uncertainity, what will happen next - if at least there will be some leaks about the 12core i9, its frequencies, solder or TIM, exact release date instead of just August... and Threadripper (performance, pricing), one would at least know what exactly is he waiting for and decide whether its worth it or not, and if the answer would be yes, then it would be easier to wait, that being deliberate choice.


Yeah, I'll wait and Timmah brings up another good point - what if Intel drops a soldered 12 core in August? Like him, the 10 core was my original target but I was horrified by the reviews and gave up on it. With any luck, TR will force a price war and Intel will have to solder the 12+ core CPUs.

In all honesty, i actually was looking at 7920x, when i thought its the top LCC die. The fact its going to be more likely HCC die with 1/3 of its cores disabled sort of soured my enthusiasm for it. Then i saw the performance reviews of 7900x, seeing its almost 2x faster in Cinebench than my current 6850k (2200 to 1150 both stock) and i thought to myself, great, that would do, and it will actually be 200 bucks cheaper and i dont have to wait another month or 2... and then all the thermal issues started to pop-up, motherboard VRM issues, etc... and here i am once again waiting.

I already sort of regret buying my current setup last August, cause if i waited that one year longer, and i guess i could, i could have go for SKL-X and 2 1080Ti´s (instead of regular 1080s i have now) and have no afterthoughts. But i kinda did not believe AMD would price the Ryzen that low, given its eventual performance - especially after seeing the prices of HW to grow in recent years by each passing generation... well, my bad. Bottom line, i dont want to have regrets like this again.
 

TahoeDust

Senior member
Nov 29, 2011
557
404
136
The 7820x and either a Gigabyte Gaming 7/9 or one of the Asus Rampage boards. I'll probably behave and stick to my original plan of waiting to see what Coffee Lake has to offer before I buy anything, but behaving is so hard when I read these forums multiple times per day.
Let me help you...

I doubt anything Coffee Lake has to offer will be able to do this...

 
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ManyThreads

Member
Mar 6, 2017
99
29
51
Has anyone tried a 7820X with a Noctua NH-D15 yet? I would OC to 4.5-4.6. I REALLY don't want water cooling if I don't absolutely have to and the last thing I want to do is buy new AIO's every few years 'just in case'. Every review I've ever seen has it hanging with all the 240mm AIO's but way quieter. I see them in a lot of builds on pcpartpicker, but nobody on forums that I can find.
 

IndyColtsFan

Lifer
Sep 22, 2007
33,656
687
126
Let me help you...

I doubt anything Coffee Lake has to offer will be able to do this...


True, but I think Coffee Lake will have better gaming performance, will clock higher, will run cooler, and will likely have the lower platform cost. My heart wants the 8+ core monster but my head thinks Coffee Lake is where I'll land.
 

AdamK47

Lifer
Oct 9, 1999
15,337
2,952
126
True, but I think Coffee Lake will have better gaming performance, will clock higher, will run cooler, and will likely have the lower platform cost. My heart wants the 8+ core monster but my head thinks Coffee Lake is where I'll land.

I've seen some people post that it will be available in August (not likely), some September (more likely), and then some early 2018. I don't think anyone really knows.
 

SexyK

Golden Member
Jul 30, 2001
1,343
4
76
Just put up a 2558 in Cinebench with all cores at 4.8 @ 1.3v. A couple of cores cracked 90c, however



Additional tweaking of memory subsystem could produce better results. There may be more headroom for clock speed as well.
 
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