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Manachanter

How does CPU choice affect gaming when CPU isn't capped?

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Posted · Original PosterOP

Hi folks, long time lurker but I've been trying to (not?) justify upgrading my 1st gen Ryzen 1800x (3.7GHz) to a 3900x or 3950x. While I can understand that you want the highest possible single core clock speed for gaming, along with a moderate amount of cores, I still wonder how that actually affects modern gaming when you are paired with a decent GPU (2800 Super here).

 

So my 1800x is never ever capped on any core with any game. Even in RDR2 right now it sits around 40% overall with the main thread core possibly reaching 60%, but none are ever capped.

 

I'm seeing all these gaming benchmarks floating around comparing current-gen CPUs (on the same mobo/ram/gpu) and they clearly show a FPS increase as the clock and core count go up, but why is this? None of them are going anywhere near 50% utilisation on any of the cores so why does this matter?

 

Can anyone provide a guide or something that I can read that explains why clock/core count matters for gaming even when not under full load? Thanks!

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 the % loading in the CPU is based on the capacity on how much it can handle, not how fast it can handle it.


Im with the mentaility of "IF IM NOT SURE IF ITS ENOUGH COOLING, GO OVERKILL"

 

CURRENT PC     

CPU             Ryzen 5 3600 (Formerly Ryzen 3 1200)

GPU             : ASUS RX 580 Dual OC (Formerly ASUS GTX 1060 but it got corroded for some odd reasons)

MOBO            : MSI B350m Bazooka

MEMORY          Team Group Elite TUF DDR4 3200 Mhz CL 16
STORAGE         : Seagate Baracudda 1TB and Kingston SSD
PSU             : Thermaltake Lite power 550W (Gonna change soon as i dont trust this)
CASE            : Rakk Anyag Frost
CPU COOLER      : ID-Cooling SE 207
CASE FANS       : Mix of ID cooling fans, Corsair fans and Rakk Ounos (planned change to ID Cooling)
DISPLAY         : SpectrePro XTNS24 144hz Curved VA panel
MOUSE           : Logitech G502 Hero
KEYBOARD        : Rakk Lam Ang

HEADSET         : Plantronics RIG 500HD

 

and a whole lot of LED everywhere(behind the monitor, behind the desk, behind the shelf of the PC mount and inside the case)

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cpu throughput?

right @Martin2132

 

i cant think of the acronym, idp or something.

ah tdp - thats thermal though

 

anyways, how many cores do games really use, and what is the core count games uses for specific games, and what does that achieve. having 10 cores at slow speed vs 6 cores at faster speed all depends on what you really want out of your system and what your system is primarly used for.

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whether or not it's worth it is up to you, but i vaguely remember the 1st gen ryzens roughly equal to a 2600k overclocked (because of how slow each core ison games that use 4c/8t, that still might be enough depending on your use case. it's very unlikely that all 8 cores would be capped, but zen 1 does bottleneck at 1080p, sometimes 1440p. I tend to look at 1% lows, but the gap between the 3950x and 9700k/9900k is insanely small (assuming ddr3600) that if i was to build a pc now, 3950x would be my choice.

 

Let say i wanna play RDR2 on 144hz, the 3950x has an average that's 20% faster than even the 2700x, that's insane.


9900k 1.39v 5.2 83C 185w 1.24v 4.9 60C 135w 1.05v 4.5 90w 50C (doing some testing for hot days) all-2avx cinebench/blender temps. avx voltages in prime. ll D15 ll Z390 taichi ult 1.60 bios fixed LLC voltage gaps ll gskill 2x8gb cl16 ddr4000 bdie 1.42v ll EVGA 2080 ti XC (duo fan skinny) 1995//7600 power limited 79C max, stock voltage (really bad ocer) ll 2x samsung 860 evo 500gb raid 0 ll 500gb nvme 970 evo ll Corsair graphite 780T ll EVGA G2 1300w ll Windows 10 Pro ll NEC PA272w (movie, work mon) 2k60 14bit lut ll Predator X27 4k144 hdr (rgb98)

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Its kinda of like RAM. You can have enough RAM that's its not loaded fully, but that doesn't mean its processing it as fast.

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1st Gen ryzen is fine for low end gpus at 1080p or mid-range gpus at 1440p, with reasonable frameate.

 

You won't generally get 144+, but it will be perfectly fine for 75+ for the most part.

 

I wouldn't upgrade unless you are specifically chasing high refresh rates.


My System: i7-8700k 5.0ghz All-core delidded @1.365v // Cryorig H7 Quad Lumi // Gigabyte Aorus Z370 Gaming 5 // 16GB Corsair Vengeance DDR4 3200 // XFX Radeon RX 5700 XT RAW II // NZXT S340 White // Seasonic Focus Plus Gold 850w // Intel 660P 1TB NVME M.2 SSD/1TB Samsung 860 EVO/1TB 2.5" HGST HDD // Displays: ASUS VG248QE/Acer K242HYL/Acer K242HYL // Corsair K68 Mechanical Keyboard - Logitech G502 // Corsair H70 Gaming Headset

 

Wife's System: i7-8700 // Arctic Freezer 33 // Gigabyte Z390M Gaming // 16GB Corsair Vengeance LPX 3200 // Sapphire Vega 64 // Thermaltake Versa H17 // Seasonic Focus Plus Gold 850w // 1TB Samsung 860 EVO/500GB Silicon Power A55/4TB Western Digital HDD // Displays: ASUS VG245H/ASUS VP248Q // Corsair K68 Mechanical Keyboard // Logitech G602 // LG BDRW // NexStar 5.25" USB 3 Enclosure

 

TV Gamer: Ryzen 5 1600 4.0ghz All-core @1.425v // Wraith PRISM // Gigabyte B450 Aorus M // 16GB GeIL DDR4 3200 // XFX Radeon RX 580 8GB XXX Edition // Thermaltake Versa H17 // Corsair Vengeance Silver 650W // 120GB Sandisk SSD/120GB PNY CS900/4TB Western Digital Blue // Display: 50" Westinghouse 1080p // Rii Wireless Mini Keyboard w/Touchpad/Xbox One Controllers

 

Son's System: i5-9400 // Cryorig H7 Quad Lumi // ASRock Z370 Extreme 4 // 16GB Corsair Vengeance DDr4 3200 // ASUS RX 570 4GB OC // NZXT S340 Black // Seasonic S12II 620w Bronze // 525GB Crucial MX300/500GB Wester Digital Blue // Display: Dell P2417H - Eagletech KG010 Mechanical Keyboard // Logitech G203

 

Daughter's System: i3-8350k // Cooler Master i71c // MSI H310M Pro VDH-Plus // 16GB T-Force Vulkan 2666 (2400) // Zotac GTX 1060 3GB Mini // DarkFlash Micro ATX White // Corsair CX550 // 480GB PNY CS1311 SSD // Display: Scepter 20" 1080p - Logitech Keyboard and Mouse

 

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Also, with how Windows handles threads, you will not really ever see one core pegged at 100%.  It moves threads from core to core faster than the task manager can update.

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14 minutes ago, Plutosaurus said:

1st Gen ryzen is fine for low end gpus at 1080p or mid-range gpus at 1440p, with reasonable frameate.

 

You won't generally get 144+, but it will be perfectly fine for 75+ for the most part.

 

I wouldn't upgrade unless you are specifically chasing high refresh rates.

Higher resolution = less CPU demand and more GPU demand.  If the CPU is good for 100fps at 1080p its good for 100fps at 8k.

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8 minutes ago, KarathKasun said:

Higher resolution = less CPU demand and more GPU demand.  If the CPU is good for 100fps at 1080p its good for 100fps at 8k.

Higher resolution doesn't exactly mean less demand on gpu - it means that generally it's gpu limited instead of cpu limited.

 

Don't try to grab a high end gpu and run it at 1080p expecting 144-240fps on a 1st gen ryzen. Which is why I mentioned lower end gpus at 1080p and mid-range gpus at 1440p, to try to keep it in the <100fps range, which is probably what 1st generation Ryzen is good for.


My System: i7-8700k 5.0ghz All-core delidded @1.365v // Cryorig H7 Quad Lumi // Gigabyte Aorus Z370 Gaming 5 // 16GB Corsair Vengeance DDR4 3200 // XFX Radeon RX 5700 XT RAW II // NZXT S340 White // Seasonic Focus Plus Gold 850w // Intel 660P 1TB NVME M.2 SSD/1TB Samsung 860 EVO/1TB 2.5" HGST HDD // Displays: ASUS VG248QE/Acer K242HYL/Acer K242HYL // Corsair K68 Mechanical Keyboard - Logitech G502 // Corsair H70 Gaming Headset

 

Wife's System: i7-8700 // Arctic Freezer 33 // Gigabyte Z390M Gaming // 16GB Corsair Vengeance LPX 3200 // Sapphire Vega 64 // Thermaltake Versa H17 // Seasonic Focus Plus Gold 850w // 1TB Samsung 860 EVO/500GB Silicon Power A55/4TB Western Digital HDD // Displays: ASUS VG245H/ASUS VP248Q // Corsair K68 Mechanical Keyboard // Logitech G602 // LG BDRW // NexStar 5.25" USB 3 Enclosure

 

TV Gamer: Ryzen 5 1600 4.0ghz All-core @1.425v // Wraith PRISM // Gigabyte B450 Aorus M // 16GB GeIL DDR4 3200 // XFX Radeon RX 580 8GB XXX Edition // Thermaltake Versa H17 // Corsair Vengeance Silver 650W // 120GB Sandisk SSD/120GB PNY CS900/4TB Western Digital Blue // Display: 50" Westinghouse 1080p // Rii Wireless Mini Keyboard w/Touchpad/Xbox One Controllers

 

Son's System: i5-9400 // Cryorig H7 Quad Lumi // ASRock Z370 Extreme 4 // 16GB Corsair Vengeance DDr4 3200 // ASUS RX 570 4GB OC // NZXT S340 Black // Seasonic S12II 620w Bronze // 525GB Crucial MX300/500GB Wester Digital Blue // Display: Dell P2417H - Eagletech KG010 Mechanical Keyboard // Logitech G203

 

Daughter's System: i3-8350k // Cooler Master i71c // MSI H310M Pro VDH-Plus // 16GB T-Force Vulkan 2666 (2400) // Zotac GTX 1060 3GB Mini // DarkFlash Micro ATX White // Corsair CX550 // 480GB PNY CS1311 SSD // Display: Scepter 20" 1080p - Logitech Keyboard and Mouse

 

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