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rahulahl
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New gaming build - RAM questions

Mon Jul 08, 2019 7:26 pm

I have been really looking forward to Ryzen 3900x benchmarks so I could finally ditch my i7 4790K and get something with more cores.
However after seeing the benchmarks, I have been mostly underwhelmed with the gaming results. I know that it's an excellent chip that excels at productivity, but it seems to fall short of the i9 9900K in gaming by a 10%+ margin, which I think kills any appeal it had for me.

So, after deciding to stay with team intel, I have decided to build my new desktop without delay.
Currently I have chosen to use these parts:

Intel i9 9900K - AUD$749
Noctua NH-D15 CPU Cooler - AUD$125
Corsair HX750 Platinum 750W Power Supply - AUD$195
ASUS ROG Strix Z390-F - AUD$335.53
GTX 1080 (Reusing it from previous build)
Fractal Design Define R4 (Reusing it from previous build)

The thing I am stuck on is the memory. I have narrowed it down to these 2 :

G.SKILL Sniper X Series 32GB DDR4 3600 (Timing 19-20-20-40) - AUD$236.50
https://www.newegg.com/global/au-en/g-s ... 6820232741
OR
G.skill Ripjaws V 32Gb DDR4 3200Mhz (Timing 16-18-18-38) - AUD$267.74
https://www.amazon.com.au/G-SKILL-Ripja ... B0171GQR0C

Is it more important to have tighter timings or higher frequency? I don't necessarily have to stick to only these 2 and I wouldn't be adverse to any better suggestions.
Like I mentioned before, the primary reason for this desktop is gaming. I don't do anything productive or creative on it.

Feel free to suggest any changes to the build. I am going to wait for the prime day next week and hope against hope that they have any decent deals in Australia that will let me save some money.
Intel i7 4790K
MAXIMUS VII RANGER motherboard
EVGA GTX 1080
16GB Ram
550Watt Seasonic PSU
Asus Rog Swift PG278Q
Windows 10
 
Waco
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Re: New gaming build - RAM questions

Mon Jul 08, 2019 8:04 pm

IMO I'd choose lower latency over more bandwidth. Games are notoriously sensitive to memory latency versus memory bandwidth.
Desktop: X570 Gaming X | 3900X | 32 GB | Alphacool Eisblock Radeon VII | Heatkiller R3 | Samsung 4K 40" | 1 TB NVME + 2 TB SATA + LSI (128x8) RAID
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JustAnEngineer
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Re: New gaming build - RAM questions

Mon Jul 08, 2019 8:08 pm

Have you compared the gaming performance of the Core i7-9700K to the i9-9900K? Be sure to look at i9-9900K reviews that include all of the mitigations for speculative execution vulnerabilities. I believe that you can save almost AU$200 without giving up much gaming performance.
i7-9700K, NH-D15, Z390M Pro4, 32 GiB, RX Vega64, Define Mini-C, SSR-850PX, C32HG70+U2407, RK-9000BR, MX518
 
rahulahl
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Re: New gaming build - RAM questions

Mon Jul 08, 2019 9:05 pm

Waco wrote:
IMO I'd choose lower latency over more bandwidth. Games are notoriously sensitive to memory latency versus memory bandwidth.

Thanks!

JustAnEngineer wrote:
Have you compared the gaming performance of the Core i7-9700K to the i9-9900K? Be sure to look at i9-9900K reviews that include all of the mitigations for speculative execution vulnerabilities. I believe that you can save almost AU$200 without giving up much gaming performance.

TBH, I am purchasing the 9900k over 9700k because HT can give it a boost in non gaming tasks. I know I mentioned that I don't do non gaming things, but even things like decompressing, ocasional photoshop or anything else I might try if it strikes my fancy might be able to use the extra threads. Since I doubt I would be upgrading the CPU again in the next 5 years, I just think it's worthwhile to spend the extra AUD$180 and get the 9900k.

That said, I am a bit concerned for thermals.
My current CPU must have been a very bad one from the start because even with an aftermarket cooler, it hits 100° in Prime95 even without an overclock.

Does the 9700K have substantially lower temps compared to the 9900k? I have read that the lack of HT hurts it in loading apps and even smaller day to day tasks like browsing, although I don't understand how it can affect browsing considering even less powerful CPU can do that just fine. If it matters, I am the kind of guy who typically had 100 odd tabs open at any given time. When I start researching any topic I tend to go overboard with a lot of tabs.
Intel i7 4790K
MAXIMUS VII RANGER motherboard
EVGA GTX 1080
16GB Ram
550Watt Seasonic PSU
Asus Rog Swift PG278Q
Windows 10
 
DPete27
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Re: New gaming build - RAM questions

Tue Jul 09, 2019 1:00 pm

Browser tabs = RAM. 32GB should be plenty of tabs!

I'd also recommend the 9700K instead.
Main: i5-3570K, ASRock Z77 Pro4-M, MSI RX480 8G, 500GB Crucial BX100, 2 TB Samsung EcoGreen F4, 16GB 1600MHz G.Skill @1.25V, EVGA 550-G2, Silverstone PS07B
HTPC: A8-5600K, MSI FM2-A75IA-E53, 4TB Seagate SSHD, 8GB 1866MHz G.Skill, Crosley D-25 Case Mod
 
rudimentary_lathe
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Re: New gaming build - RAM questions

Tue Jul 09, 2019 1:49 pm

At what resolution are you gaming? At 1440p or higher, the difference in FPS between a 4790K and a 9900K may not be much. I actually don't know for certain - I am contemplating this very question at the moment. I have a E3-1241 (basically a 4790 non-K) and making the move to 1440p from 1080p - thinking I may just upgrade the GPU for now and do some benchmarks before I decide whether to upgrade my entire platform. From my preliminary research I believe the 4790 is roughly 30-35% behind in single-core performance. With an overclocked 4790K the gap would be less. Of course there are other improvements with the 9900K (more cores/threads being the most obvious).
 
Chrispy_
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Re: New gaming build - RAM questions

Tue Jul 09, 2019 6:51 pm

The 1080 is going to be the bottleneck in this system, so I'm not sure why you'd want to spend $750 on a processor that is largely wasted on its first GPU. I'll be getting a 3700X simply because that's a whole bunch of saved money for negligibly less performance. My gaming rig has a lowly 2060 in it and there's absolutely no way I'm anything other than GPU bottlenecked at all times. For a start, my monitor doesn't refresh high enough for it to be an issue, even at 720p, let alone the 1440p it actually games at!

The ~$400 saved on a high-end procesor is a GPU upgrade down the line, basically.

A 9700K will do the job, and Intel's endless stream of security problems and performance-killing patches makes me hesitant about the point of a 9900K when you may end up having to completely disable hyperthreading anyway. A lot of security experts are saying disable HT on the 9900K anyway because it's currently compromised and you're already taking a risk (though admittedly you're not likely to be a priority target because your name isn't Apple, Amazon, Google, or Microsoft.)

At any rate, whether you go Intel or AMD, to work out memory performance of various timings take the freq and divide by the CAS to give you a performance rating where the biggest number is the best kit:

3600/CAS19 = 187
3200/CAS16 = 200
3000/CAS14 = 214

And if two different RAM kits are very close and you can't decide, go for the lower voltage one over the higher bandwidth one, since that'll pass power budget from your CPU's memory controller back to the CPU cores for longer/faster boost and the current gen Intels run HOT HOT HOT. Every Watt matters!
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rahulahl
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Re: New gaming build - RAM questions

Tue Jul 09, 2019 8:45 pm

I know that my current GPU will be the main bottleneck and not the CPU. But my last 2 builds were kept for 5 years each. I expect that I will at least go through 2 GPU upgrades. So I see myself using a 3080/3080ti or even a 5080-5080ti later on with this CPU. When I purchase a CPU I don't really look at it like it will give me more FPS currently, but a higher end CPU will allow me to keep my whole system for longer with only the GPU being the bottleneck, which I can replace easily. For productivity the CPU will result in work being done faster so it makes sense to look at it in terms of current performance, but for me it is simply a matter of purchasing something high end currently so I can forget about it until it eventually becomes a bottleneck forcing me to upgrade, which I would like to delay. I mean, no one can predict how things will be in 4-5 years, but purchasing a high end CPU, Memory, etc gives me a peace of mind that it will probably last for a while and I can simply go through GPU upgrades for performance.

Plus the higher performance will be useful while using Emulators. I have been holding off using emulators because the current CPU simply does not cut it. And they tend to be CPU restricted and not GPU.
Intel i7 4790K
MAXIMUS VII RANGER motherboard
EVGA GTX 1080
16GB Ram
550Watt Seasonic PSU
Asus Rog Swift PG278Q
Windows 10

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