Review 6700k vs 3700x in 23games

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Head1985

Golden Member
Jul 8, 2014
1,720
451
136
Not entirely true. You can either do a lot of goofy stuff to try and amp up your boost clocks (use PBO, fiddle with LLC settings), or you can go for static OC which will get you some decent gains in games that spawn a fair number of threads. I think 4.2 GHz static is attainable on almost any 3700x in games. I know that my 3900x, despite being able to boost to 4.6 GHz, runs games faster with a static OC of 4.4 GHz (or even 4.375 GHz) since the boost duration is so short. Max boost for a 3700x is supposed to be 4.3 GHz and PBO + Auto OC is often quite useless. If I had a 3700x, 4.2 GHz static on all cores would be my target for games. Or at least 4.15 GHz.
All core oc is not worth becuase:
1-cpu wont downclock in iddle and is always on max voltage.
2-i can oc to 4250mhz, but performance is same as with all settings default:) so its not worth it because cpu will degrade very fast without downclocking/iddle voltage.
 

Gideon

Senior member
Nov 27, 2007
502
536
136
. If I had a 3700x, 4.2 GHz static on all cores would be my target for games. Or at least 4.15 GHz.
Having a 3700x, I wouldn't really recommend that ,at least not for all.

With everything at stock, all of my cores are usually at 4.275 GHz (fluctuating between 4.25 - 4.30 GHz). And yes, that is for the entire gaming session, in games like BF1, Metro Exodus. With PBO the clocks are fixed @ 3250Mhz and pretty much never move in any direction. Without PBO, most of the cores are over 4.25 Ghz, in some segments all are at 4.3GHz (none of that ever happens with PBO).

Some anectodal screenshots:
Without PBO (Stock):


Without PBO (stock) less taxing games:


With PBO:

As you can see, even in quite multi-threaded games the CPU load isn't all that great (at least with my 1070 GTX)

Now, of course Cinebench (R20 Improves from ~4750 to ~4950 points) and other loads, using near 100% of the CPU improve considerably with PBO (and manual overclocks), but AFAIK, games do not utilize the cores to the same degree. Also, bear in mind, that at stock the CPU limited to a nice, never-to-exceed 88W PPT limit, which is dead-silent on my Noctua NH-U12S. PBO draws 144W+ and is nowhere near silent, yet in most games the performance actually takes a hit.

This might be because of my relatively weak GPU (1070 GTX) but it shows that even PBO, much less manual overclock aren't always helping, rather the opposite
 
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DrMrLordX

Lifer
Apr 27, 2000
13,040
2,705
136
All core oc is not worth becuase:
1-cpu wont downclock in iddle and is always on max voltage.
Not true. At all. If you leave UEFI clockspeed/voltage at stock (except for LLC and other VRM settings) and use Ryzen Master to set your clocks + vcore, then you will not be pegged to max voltage all the time. Additionally, you will not see voltage spikes above the voltage you set. No more "why is my CPU at 1.5v wahhh" type of thing. The only time I've ever gotten better performance from boost was in something perversely single-threaded like SuperPi, and I had to tweak a bunch of LLC settings very carefully to get it to boost reliably. It was weird and totally not worth the effort.

2-i can oc to 4250mhz, but performance is same as with all settings default:) so its not worth it because cpu will degrade very fast without downclocking/iddle voltage.
I find that hard to believe, but hey, I guess your board likes to boost? Mine sure doesn't. No way it's hitting 4250 MHz on any significant number of cores with just boost. I think the best I ever did was 4180 MHz. Maybe if I stuck everything at defaults and moved LLC down to Low, I could get there.

Having a 3700x, I wouldn't really recommend that ,at least not for all.
Have you tried performance-based benching between boost behavior and static OC? I did on my setup, and PBO was the big loser with stock coming in at second place. First place was a conservative all-core OC to 4.3 GHz. Note this was without me trying any LLC hyjinx to try and fool the boost algorithm into changing its behavior. I found that boost was more aggressive with lower LLC settings, while PBO was more aggressive with higher LLC settings.
 

DrMrLordX

Lifer
Apr 27, 2000
13,040
2,705
136
I want to add an addendum to my above post: in order to make my motherboard/CPU combo (3900x + x570 Aorus Master, 8/2/2019 UEFI with 1.0.0.3ABB) boost to the highest possible all-core/multicore clocks, I had to:

1). Set CPU and SoC LLC to "Normal" which is basically, LLC OFF
2). Set a voltage offset of - .1000v

That got my boost clocks in games up into the 4250 MHz territory. It also got me a CBR20 score of just over 7300, which is the highest i've gotten under this particular UEFI. I think I could do a bit better if I lowered RAM clocks to DDR4-3200. Maybe. But who wants to do that?
 

Kyron71

Member
Sep 5, 2019
76
8
11
But remember the 6700 was 2nd from tops when it came out.

3700 is down the list a bit for AMD.
 

StrangerGuy

Diamond Member
May 9, 2004
8,413
114
106
For those who want to see what single thread CPU-limited gaming really is like, try CS:GO with 31 bots: My 3600 gets 63% more avg FPS here than my old 4790K.
 

kasakka

Senior member
Mar 16, 2013
334
1
81
For reference, these are the scores I get with Shadow of the Tomb Raider benchmark with a 6600K @ 4.5 GHz and 2080 Ti at 1080p. Raytracing was off, ultra settings, DX12. Windows 10 64-bit version 1809.

Code:
CPU g = CPU game
CPU r = CPU render

Fps  | CPU g | CPU r | GPU
Min  | 110   |  72   | 129
Max  | 248   | 393   | 348
Avg  | 169   | 127   | 172
95%  | 124   |  75   | 139
This is almost entirely CPU bound, 7% GPU bound according to the stats. Going up to 4K makes it 79% GPU bound.
Upgraded to 3700X on Gigabyte X470 Aorus Gaming 7 and 3200 MHz 16 GB. Stock settings so far, just early testing. Anyway, the same test was run and the results were the following:

Code:
CPU g = CPU game
CPU r = CPU render

Fps  | CPU g | CPU r | GPU
Min  | 85   |  135   | 130
Max  | 156   | 335   | 252
Avg  | 120   | 194   | 162
95%  | 89   |  143   | 134
Interestingly I see drops in some but the CPU render values are up a lot. Perceptually the game runs a lot smoother at the usual 4K DLSS + RTX setting I use.
 
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