Coffeelake thread, benchmarks, reviews, input, everything.

[PeterScott]

So, with snapshots like these can we finally acknowledge people who argued for more cores in gaming were actually on to something?

No one said more cores wouldn't help. Just that it would be a case of diminishing returns. Also you can't grab one screen shot, as very often you get anomalous results like that. What is the overall difference?

 

[Glo.]

I've been wondering too, if the CFL quads were really harvested hex-cores. Anyone feel like delidding an i3-8100? (Preferably, not me... I need this one working for a build.)

The fact that the i3's have 2400 MHz IMC shows that it is basically Corei5/i7 Kaby Lake CPU reengineered for 1151v2 socket.

 

[coercitiv]

No one said more cores wouldn't help. Just that it would be a case of diminishing returns.

Nope, it was said it wouldn't help. It was repeatedly claimed that games would not scale, that the MT model in gaming is with just a few heavy load threads and multiple light threads that don't really tax the CPU much.

Sure it's a case of diminishing returns, sure I'm just posting a few screenshots and we should check comprehensively across a wide spectrum of games, but here we are witnessing how a nearly 5 year old game shows a noticeable uptick in FPS due to increase in core count. Maybe this will finally open a few eyes.

 

[Ackmed]

Little underwhelmed to be honest. If I was on say, a 2500k, I would jump on it. Having a 6700/7700 seems pointless to me for most people. Seems like a sold cpu/chipset, just no point to upgrade for me yet.

 

[VirtualLarry]

here we are witnessing how a nearly 5 year old game shows a noticeable uptick in FPS due to increase in core count

AND L3 cache size... 8MB to 12MB, I believe we're seeing.

Edit: Remember those few benchmark game reviews, where the Core2Quad CPUs with the full-fat 12MB L2 cache, slightly edged out newer-gen CPUs, which had L3 cache but less overall total? Talking Intel CPUs here, not AMD FX.

 

[PeterScott]

Nope, it was said it wouldn't help. It was repeatedly claimed that games would not scale, that the MT model in gaming is with just a few heavy load threads and multiple light threads that don't really tax the CPU much.

That's not what I read. I have been on the side people that were damping down expectations, but I was certainly expecting many, if not most to show improvments. There may have been a fringe saying it wouldn't help, but they were a tiny minority.

Sure it's a case of diminishing returns, sure I'm just posting a few screenshots and we should check comprehensively across a wide spectrum of games, but here we are witnessing how a nearly 5 year old game shows a noticeable uptick in FPS due to increase in core count. Maybe this will finally open a few eyes.

You aren't just cherry picking an outlier game, but you are cherry picking an outlier frame, which is misleading in the extreme.

Here are results from Crysis 3, Eurogamer test. It does the best of just about any game tested, anywhere:
http://www.eurogamer.net/articles/digitalfoundry-2017-intel-coffee-lake-core-i7-8700k-review

8700K 5.0Ghz 179.6
7700K 4.8GHz 145.5

That is a 23% gain, from 50% more cores (and 4% higher clock speed). That is what diminishing returns look like, and that is still one of the best results anywhere.

 

[TahoeDust]

So, with snapshots like these can we finally acknowledge people who argued for more cores in gaming were actually on to something?

Only if we can finally acknowledge that the 7820x is a better gaming CPU than 7700k...lol

 

[LTC8K6]

And then there's the question of overclocking: we found that with a 1.32v core voltage tweak, the 8700K ran just fine at 5.0GHz - even under testing AVX workloads under Handbrake.

From the Eurogamer link.

 

[VirtualLarry]

Does the 8700K have an AVX offset?

 

[TahoeDust]

Does the 8700K have an AVX offset?

Good question. I was just wondering the same thing. That could help control temps when running a big OC...especially in synthetic tests.

 

[tvdang7]

Due to Intel not increasing IPC and only clocks and cores, AMD needs to hurry up and make 4ghz+ Ryzen's already.

 

[LTC8K6]

Does the 8700K have an AVX offset?

I would imagine it has the same setting in BIOS as the previous gen.
That review makes it seem like Coffee Lake may not need an AVX offset.

 

[Accord99]

Does the 8700K have an AVX offset?

In Techreport's review, they mentioned using it:

Eventually, I compromised and set a 5-GHz all-core speed with a -2 AVX offset, good for 4.8 GHz on all cores under AVX workloads. Incredibly, that configuration was happy even under Prime95 loads with an observed 1.284-1.296V using dynamic Vcore on our Aorus motherboard, so it wasn't difficult to cool at all— 80° C or so was the order of the day with a Corsair H115i on top.

http://techreport.com/review/32642/intel-core-i7-8700k-cpu-reviewed/5

 

[TahoeDust]

In Techreport's review, they mentioned using it:


http://techreport.com/review/32642/intel-core-i7-8700k-cpu-reviewed/5

Boom. That is what I am talking about. 5GHz with a -2AVX offset running sold temps. People call these chips "furnaces" but ignore AVX offset.

 

[LTC8K6]

Tjunction for the 8700K is 100C, so 80C is very nice.

 

[Markfw]

In Techreport's review, they mentioned using it:


http://techreport.com/review/32642/intel-core-i7-8700k-cpu-reviewed/5

80C with one of the best AIO coolers ? That does not sound like "wasn't difficult to cool at all".

I won't let mine run much over 70c sustained loads. ANY of my boxes, Intel Xeons or Ryzens or my TR.

NOTE: All my boxes run 100% load 24/7/365. So someone running occasional loads at 80c may be fine, I just can't deal with that.

 

[LTC8K6]

80C with one of the best AIO coolers ? That does not sound like "wasn't difficult to cool at all".

I won't let mine run much over 70c sustained loads. ANY of my boxes, Intel Xeons or Ryzens or my TR.

So do a -3 AVX offset then.

 

[imported_bman]

Wow, the turbo bins on the 8700 non-k are far far better than I expected.

 

[TahoeDust]

80C with one of the best AIO coolers ? That does not sound like "wasn't difficult to cool at all".

I won't let mine run much over 70c sustained loads. ANY of my boxes, Intel Xeons or Ryzens or my TR.
NOTE: All my boxes run 100% load 24/7/365. So someone running occasional loads at 80c may be fine, I just can't deal with that.

Do you know what would really make these chips easy to cool? If they only ran 4.0GHz when overclocked...

 

[eddman]

NOTE: All my boxes run 100% load 24/7/365.

What workload do you run that needs to be run 24/7/365 at 100%? Mining?

 

[TahoeDust]

What workload is it that needs to be run 24/7/365 at 100%?

I'm pretty sure I remember him saying he is a Folder.

 

[DigDog]

according to the bench on AT, the real gem here is the 8400.

 

[IRobot23]

according to the bench on AT, the real gem here is the 8400.

Real gem are R5 1600/X. Well for that price all them are GEMS.

Anyway 6T threads can easily max out in newer games, maybe we will finally see 12Threads usefull.

 

[PhonakV30]

Hope we move to six cores from 4 cores.game industrial needs an eight richter !

 

[Markfw]

I'm pretty sure I remember him saying he is a Folder.

We have a winner ! Yes, F@H on GPU (34th in the world) and WCG on CPU. over 200 cores on CPU, and 13 video cards on F@H.