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Intel Core i9-7900X reviews are going live!

Ah yes I remember those times when I thought it was OK to cool with delta fans. Those things could be heard throughout the entire house, I don't think I'll be doing that again lol.

still got some deltas in a box somewhere, now did anyone own a tornado ( i think the name was) case from ocuk with the 80mm fans howling along :D
 
still got some deltas in a box somewhere, now did anyone own a tornado ( i think the name was) case from ocuk with the 80mm fans howling along :D

FOP38 was louder that anything back in the period. To the point forced me to build my first watercooling system for the Tbird :)
 
I'd say not really.

If you want lots of multi-thread performance you should get AMD Threadripper in July/August.

If you want lots of single-thread performance you should wait for 6-core Coffeelake on the mainstream platform.

Skylake-X would only be attractive to someone with a 5930k if you have very deep pockets and want a balance of single/multi-thread by getting the 10-core $1000 chip. And a very beefy cooler to cope with its heat.

7900X makes no sense to someone who has 5930K/6800K. Actually makes no sense at all.
A ryzen 1700 goes for £282 atm. Why pay £720 extra for 2 cores??? The only thing that makes sense is wait for the 16core threadripper. Given its epyc brother is around 700-850 its price is expected lower than 900 for 60% more cores over the 7900X.
 
7900X makes no sense to someone who has 5930K/6800K. Actually makes no sense at all.
A ryzen 1700 goes for £282 atm. Why pay £720 extra for 2 cores??? The only thing that makes sense is wait for the 16core threadripper. Given its epyc brother is around 700-850 its price is expected lower than 900 for 60% more cores over the 7900X.

Don't forget the cheaper board and ram with ryzen. It's coffee lake six core a lot of the gaming crowd will look to now I'd imagine. Hopefully fast single core and a decent amount to spare for multi threaded games. If you stream, render etc as well as game (I don't), I still think the 1700 or 1700x is looking very good right now with 3200 c14 or better. Just gaming, I think coffee lake likely better.
 
I only game tbh, so that's the only performance in mind, if OC'd for OC'd if I got 20% increase I'd probably make the move, it feels like I've been on X99 forever. so 20% faster or not?

Definitely not 20%, no.

There actually appears to be an issue with how Intel has rejigged the L2 and L3 cache, causing Skylake-X to performance WORSE than Broadwell-E in games at the same clocks. And Broadwell-E is nearly identical to Haswell-E.

So you may find you get mildly lower framerate at the same 4.5 GHz.

Coffeelake I'm pretty sure won't have the same L2/L3 structure, so may not suffer this issue. But that remains to be seen.

The only options you have for (possibly) significantly higher gaming performance are the 6-core CoffeeLake CPU coming in a couple of months, or AMD Zen2 in 2018/2019 if Zen2 fiddles with its cache structure too.

Other than that, Intel's next 'proper new' architecture is Ice Lake, but it's unclear whether that's coming 2H 2018 or some time in 2019.

The only other thing which could change the situation is if game engines begin to genuinely change how they use CPU resources, and that alters what kind of core-count and cache-structure is best.
 
pre ordered 7900x from amazon
now waiting for motherboard rex 6 extreme

If you're not in a big hurry, you may want to wait for Threadripper to show its hand. That's only 4-6 weeks out, and rumour has it the 16-core will only be around £850.

If you want gaming performance, Skylake-X is looking like it's worse than Broadwell-E due to the change in cache structure.

And if you want multi-threading performance, Threadripper is all but guaranteed to hand Skylake-X its ass in absolute performance as well as price/performance.

Also if you do go for the 10-core Skylake-X, don't forget you need the absolute top-end cooling available. 240mm AIO watercooler bare minimum.
 
Definitely not 20%, no.

There actually appears to be an issue with how Intel has rejigged the L2 and L3 cache, causing Skylake-X to performance WORSE than Broadwell-E in games at the same clocks. And Broadwell-E is nearly identical to Haswell-E.

So you may find you get mildly lower framerate at the same 4.5 GHz.

Coffeelake I'm pretty sure won't have the same L2/L3 structure, so may not suffer this issue. But that remains to be seen.

The only options you have for (possibly) significantly higher gaming performance are the 6-core CoffeeLake CPU coming in a couple of months, or AMD Zen2 in 2018/2019 if Zen2 fiddles with its cache structure too.

Other than that, Intel's next 'proper new' architecture is Ice Lake, but it's unclear whether that's coming 2H 2018 or some time in 2019.

The only other thing which could change the situation is if game engines begin to genuinely change how they use CPU resources, and that alters what kind of core-count and cache-structure is best.

Many thanks for that reply
 
I only game tbh, so that's the only performance in mind, ...

No reason to get onto X299 then, it appears to be more a prosumer platform than anything else. Beside, with your current system you won't notice much difference anyway. Keep your pennies :)
Buy faster RAM though because you're necking your CPU performance in games; try and see if you can get 3000MHz running, that'll sort you out.

Coffeelake I'm pretty sure won't have the same L2/L3 structure, so may not suffer this issue. But that remains to be seen.

Correct: 6x 256KB L2, 12MB L3.

6C12T-Coffee-Lake-CPU_02.jpg
 
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Many thanks for that reply

No problem :)


Also more generally, have people mentioned yet that if these 10-core chips are running so hot even at stock clocks and with a 240mm AIO, does this not point to the 18-core chips having to run at significantly lower clocks?

Regardless of the issue about whether there needs to be an immediate 2nd revision of the socket to support the power draw, how are people going to cool the thing?
 
august 2010 when i build my monster now its time for new monster

what to wait AMD thanks no

i will delid my baby and water cool sure i will use 360 rad custom cooling.. no AIO

4.5 ghz will be more than enough for me and really great speed encrease from 980x


If you're not in a big hurry, you may want to wait for Threadripper to show its hand. That's only 4-6 weeks out, and rumour has it the 16-core will only be around £850.

If you want gaming performance, Skylake-X is looking like it's worse than Broadwell-E due to the change in cache structure.

And if you want multi-threading performance, Threadripper is all but guaranteed to hand Skylake-X its ass in absolute performance as well as price/performance.

Also if you do go for the 10-core Skylake-X, don't forget you need the absolute top-end cooling available. 240mm AIO watercooler bare minimum.[/QUOTE
 
No problem :)


Also more generally, have people mentioned yet that if these 10-core chips are running so hot even at stock clocks and with a 240mm AIO, does this not point to the 18-core chips having to run at significantly lower clocks?

Regardless of the issue about whether there needs to be an immediate 2nd revision of the socket to support the power draw, how are people going to cool the thing?

OK, I took delivery of Core i9-7900X, Asus TUF Mark 2 mobo, and 16Gb of 3000Mhz DDR4. I saw the price drop into the mid £800's for an OEM part in the last 72 hours (Threadripper money) and so I've upgraded from an 4.2Ghz long-term overclocked Core i7-3930K with a custom loop of 1 x 360mm rad and 1 x 240mm double-thickness rad, which also included a 980Ti in the loop. I run a very mixed range of workloads and only do casual gaming. Most of what I do will make use of strong IPC first and foremost, but also I can use every core I can lay my hands on. I've had a long look at Ryzen and the IPC/core doesn't quite work for me, but it was close. Intel IPC with 10 cores essentially means that this is another 5 to 6 year investment in this rig for my purposes and look at some of now known architectural design details in Threadripper I've decided I'm not waiting it.

So far, I've rebuilt my rig and after reading various reviews I've been left under the impression that my custom loop would be seriously busy potentially trying to shift a possible 240W TDP of heat I've removed my 980Ti from the loop and put it's air-cooler back on.

I've not properly benched my new rig yet and have simply run a bunch of commonly used workloads to get a direct comparison. The configuration of the new rig was simply to enter the BIOS, select the XMP profile offered by my DDR4 modules and then go and load my OS. Some of my workloads are heavily threaded and so I expected a significant uplift of performance but maybe at the cost of quite a bit of heat, and boy was I surprised.

Suffice to say I would take what has been written on Toms and others with a massive sack of salt. Based on their article I've been worrying myself silly about shifting heat and it has been exactly the opposite. My XMP based overclock has set a 4.2Ghz base and my typical have this thing running about 20c cooler than my 3930K for a similar overclock. I need to do more benching but this thing just isn't getting hot at all, and the TDP hasn't been anything close to the fabled 240w that they claimed they were seeing. I thought it didn't stack up at the time that I read that, and my actual experience is indicating that my gut instinct was correct. Either that article is a crock, or they were reviewing an engineering sample and perhaps my OEM lower tray priced unit is from a more recent batch - because it's freakin amazing! It's early days and maybe I've just not hit a workload that is really going to push it. I've got some AVX based workloads I can throw at it (which is another reason why I didn't wait for threadripper) and it might be that I'll start seeing something different then.
 
OK, I took delivery of Core i9-7900X, Asus TUF Mark 2 mobo, and 16Gb of 3000Mhz DDR4. I saw the price drop into the mid £800's for an OEM part in the last 72 hours (Threadripper money) and so I've upgraded from an 4.2Ghz long-term overclocked Core i7-3930K with a custom loop of 1 x 360mm rad and 1 x 240mm double-thickness rad, which also included a 980Ti in the loop. I run a very mixed range of workloads and only do casual gaming. Most of what I do will make use of strong IPC first and foremost, but also I can use every core I can lay my hands on. I've had a long look at Ryzen and the IPC/core doesn't quite work for me, but it was close. Intel IPC with 10 cores essentially means that this is another 5 to 6 year investment in this rig for my purposes and look at some of now known architectural design details in Threadripper I've decided I'm not waiting it.

So far, I've rebuilt my rig and after reading various reviews I've been left under the impression that my custom loop would be seriously busy potentially trying to shift a possible 240W TDP of heat I've removed my 980Ti from the loop and put it's air-cooler back on.

I've not properly benched my new rig yet and have simply run a bunch of commonly used workloads to get a direct comparison. The configuration of the new rig was simply to enter the BIOS, select the XMP profile offered by my DDR4 modules and then go and load my OS. Some of my workloads are heavily threaded and so I expected a significant uplift of performance but maybe at the cost of quite a bit of heat, and boy was I surprised.

Suffice to say I would take what has been written on Toms and others with a massive sack of salt. Based on their article I've been worrying myself silly about shifting heat and it has been exactly the opposite. My XMP based overclock has set a 4.2Ghz base and my typical have this thing running about 20c cooler than my 3930K for a similar overclock. I need to do more benching but this thing just isn't getting hot at all, and the TDP hasn't been anything close to the fabled 240w that they claimed they were seeing. I thought it didn't stack up at the time that I read that, and my actual experience is indicating that my gut instinct was correct. Either that article is a crock, or they were reviewing an engineering sample and perhaps my OEM lower tray priced unit is from a more recent batch - because it's freakin amazing! It's early days and maybe I've just not hit a workload that is really going to push it. I've got some AVX based workloads I can throw at it (which is another reason why I didn't wait for threadripper) and it might be that I'll start seeing something different then.

Oh you are going to be in so much trouble. ;)
 
I've got some AVX based workloads I can throw at it (which is another reason why I didn't wait for threadripper) and it might be that I'll start seeing something different then.

It would be interesting to see your temps after running OCCT Linpac with AVX enabled for 8hrs at 7900x stock speed ?
 
Oh you are going to be in so much trouble. ;)

Is that because you're feeling the age in your 3930K too? lol

With the lower price in the last couple of days, if I compare it to what I spent nearly 6 years ago for my 3930K with an Asus RIVE, I've spent almost the same on board and CPU I've got today as I did back then. I'll admit that at £999 just for the CPU it just wouldn't have happened, but that £150 drop in the last couple of days was the tipping point.
 
Is that because you're feeling the age in your 3930K too? lol

With the lower price in the last couple of days, if I compare it to what I spent nearly 6 years ago for my 3930K with an Asus RIVE, I've spent almost the same on board and CPU I've got today as I did back then. I'll admit that at £999 just for the CPU it just wouldn't have happened, but that £150 drop in the last couple of days was the tipping point.

More that you said something positive about X299. ;) Good to see the drop and we might see more when TR comes along.
 
Well you are using a pretty beefy water cooling solution by the sounds of it so I'd expect the chip to have reasonable temperatures during "normal" workloads. You didn't actually quote any figures though - 20 °C lower than your previous setup could still be 70 °C for all I know. :p

I'd be interested to see what temperatures you get in intensive AVX workloads. Also you seem to be confusing TDP with actual power consumption. Intel rates the chips for TDP but that doesn't mean they don't actually use more power than that, even when not overclocked (see: Skylake-SP).
 
Well you are using a pretty beefy water cooling solution by the sounds of it so I'd expect the chip to have reasonable temperatures during "normal" workloads. You didn't actually quote any figures though - 20 °C lower than your previous setup could still be 70 °C for all I know. :p

I'd be interested to see what temperatures you get in intensive AVX workloads. Also you seem to be confusing TDP with actual power consumption. Intel rates the chips for TDP but that doesn't mean they don't actually use more power than that, even when not overclocked (see: Skylake-SP).

That's why i asked Dirtyganker to run 8hrs of OCCT Linpac with AVX enabled with the cpu at stock clocks. After all, shurely all of us test a new cpu at stock before moving a clock upwards ?
 
OK, I took delivery of Core i9-7900X, Asus TUF Mark 2 mobo, and 16Gb of 3000Mhz DDR4. I saw the price drop into the mid £800's for an OEM part in the last 72 hours (Threadripper money) and so I've upgraded from an 4.2Ghz long-term overclocked Core i7-3930K with a custom loop of 1 x 360mm rad and 1 x 240mm double-thickness rad, which also included a 980Ti in the loop. I run a very mixed range of workloads and only do casual gaming. Most of what I do will make use of strong IPC first and foremost, but also I can use every core I can lay my hands on. I've had a long look at Ryzen and the IPC/core doesn't quite work for me, but it was close. Intel IPC with 10 cores essentially means that this is another 5 to 6 year investment in this rig for my purposes and look at some of now known architectural design details in Threadripper I've decided I'm not waiting it.

So far, I've rebuilt my rig and after reading various reviews I've been left under the impression that my custom loop would be seriously busy potentially trying to shift a possible 240W TDP of heat I've removed my 980Ti from the loop and put it's air-cooler back on.

I've not properly benched my new rig yet and have simply run a bunch of commonly used workloads to get a direct comparison. The configuration of the new rig was simply to enter the BIOS, select the XMP profile offered by my DDR4 modules and then go and load my OS. Some of my workloads are heavily threaded and so I expected a significant uplift of performance but maybe at the cost of quite a bit of heat, and boy was I surprised.

Suffice to say I would take what has been written on Toms and others with a massive sack of salt. Based on their article I've been worrying myself silly about shifting heat and it has been exactly the opposite. My XMP based overclock has set a 4.2Ghz base and my typical have this thing running about 20c cooler than my 3930K for a similar overclock. I need to do more benching but this thing just isn't getting hot at all, and the TDP hasn't been anything close to the fabled 240w that they claimed they were seeing. I thought it didn't stack up at the time that I read that, and my actual experience is indicating that my gut instinct was correct. Either that article is a crock, or they were reviewing an engineering sample and perhaps my OEM lower tray priced unit is from a more recent batch - because it's freakin amazing! It's early days and maybe I've just not hit a workload that is really going to push it. I've got some AVX based workloads I can throw at it (which is another reason why I didn't wait for threadripper) and it might be that I'll start seeing something different then.

Hope it works out for you.

The X299 platform does still make sense if you need a combination of very strong single-core, and decent many-core performance.

If it does turn out to be a problem (either temps, or bugs as it's a new platform etc.), the only other thing to think about with Threadripper is that you get Zen2 and Zen3 on 7nm and 7nm+ too. So you can take a slight gamble about what their performance will be like.

I think it's a mild gamble though, as GloFo 14nm is rated at 3GHz target, and 7nm is rated at 5GHz target.

So in other words, you could take a hit to single-core now, in exchange for more many-core performance. And then end-2018 to early-2019 you could have a drop-in replacement that'll likely have much stronger single-core performance.
 
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