CPU_VS_GPU / 2026-09-11
AMD Ryzen 9 3900XvsNVIDIA RTX 2070 SUPER
Complete bottleneck analysis at 1080p, 1440p, Ultrawide (UWQHD/SUWQHD), and 4K with estimated FPS for popular games.
33%
ESTIMATED GPU BOTTLENECK
Your GPU (RTX 2070 SUPER) severely limits the system at 2560x1440, leaving the Ryzen 9 3900X heavily underused. A faster GPU would improve performance dramatically.
Load estimated by the model, not measured on your PC.
- PROCESSORAMD Ryzen 9 3900X
- GRAPHICSNVIDIA RTX 2070 SUPER
- MEMORY16GB DDR4/DDR5
- RESOLUTION2560x1440
Average across the demanding titles at 2560x1440.
Average across the competitive titles, where the processor leads.
What the build draws (470 W) plus headroom.
DEEP-DIVE ANALYSIS
GENERATED BY THE ENGINEPairing the AMD Ryzen 9 3900X (57/100 on our gaming index) with the NVIDIA RTX 2070 SUPER (23/100) raises one practical question: do they pull together, or does one hold the other back? We ran this exact combination across all supported resolutions to answer it with numbers rather than guesswork.
Quick take: 1440p with a setting or two turned down
At 1080p the two stay well balanced, whereas at 4K the RTX 2070 SUPER is the limiting part (~65% GPU bottleneck). No 16:9 size keeps this pair above 60 FPS in demanding titles. 1440p is the highest that stays playable, at roughly 39 FPS on average in AAA. Esports is a different story — around 244 FPS at 1080p.
As you climb from 1080p to 4K, the load shifts from the processor toward the graphics card: every extra pixel lands on the RTX 2070 SUPER. Here, efficiency moves from 93% at 1080p to 35% at 4K — which shows the part the frame rate depends on at each end.
Down to real numbers: In esports titles like Valorant this pair flies — around 401 FPS at 1080p, plenty for a high-refresh monitor. At the other end, a demanding AAA like Alan Wake 2 drops to ~10 FPS at 4K, which is where the RTX 2070 SUPER's ceiling really shows. Overall, expect about 56 FPS average in AAA games at 1080p and around 22 FPS at 4K.
[CPU] Ryzen 9 3900X
On the CPU side: the Ryzen 9 3900X rates 57/100 for gaming in this model and brings 12 cores and 24 threads. With 64 MB of L3 cache it has room to keep the RTX 2070 SUPER well fed. At lower resolutions it's the one setting the pace for the whole system.
[GPU] RTX 2070 SUPER
On the graphics side, the RTX 2070 SUPER rates 23/100 for gaming in this model. Its 8 GB of GDDR6 set how far it can go on resolution and texture quality before video memory runs short. The higher the resolution, the more of the frame rate depends on it.
A detail that's easy to overlook: Both parts come from nearby generations, which usually means a natural pairing with no platform surprises. You're combining an AMD platform with an NVIDIA GPU — a perfectly valid mix that imposes no penalty.
DO YOU NEED TO CHANGE ANYTHING?
At 1440p the RTX 2070 SUPER sets the frame rate. No card in our catalogue clears the bar we use for a recommendation: at least 25% more frames while the Ryzen 9 3900X still keeps it fully fed. The closest, the NVIDIA RTX 5090, adds about 82% in this model. So there is no card we would tell you to buy for this pairing.
PRICE OF EACH PART
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SPECIFICATIONS
CATALOGUE DATA[CPU] AMD Ryzen 9 3900X
- Cores12C / 24T
- Clock3.8 – 4.6 GHz
- TDP105 W
- SocketAM4
- Single-thread2,729
- Multi-thread32,770
- L3 cache64 MB
[GPU] NVIDIA RTX 2070 SUPER
- VRAM8 GB GDDR6
- Memory bus256-bit
- TDP215 W
- G3D Mark18,199
- Memory bandwidth448 GB/s
BOTTLENECK BY RESOLUTION
SYNERGY · AVERAGE FPSYour CPU (Ryzen 9 3900X) and GPU (RTX 2070 SUPER) are an exceptionally balanced match for gaming at 1920x1080. No realistic component swap would meaningfully improve this build.
Your GPU (RTX 2070 SUPER) severely limits the system at 2560x1440, leaving the Ryzen 9 3900X heavily underused. A faster GPU would improve performance dramatically.
Your GPU (RTX 2070 SUPER) severely limits the system at 3440x1440 (Ultrawide 21:9), leaving the Ryzen 9 3900X heavily underused. A faster GPU would improve performance dramatically.
Your GPU (RTX 2070 SUPER) severely limits the system at 5120x1440 (Super Ultrawide 32:9), leaving the Ryzen 9 3900X heavily underused. A faster GPU would improve performance dramatically.
Your GPU (RTX 2070 SUPER) severely limits the system at 4K, leaving the Ryzen 9 3900X heavily underused. A faster GPU would improve performance dramatically.
ESTIMATED FPS BY GAME
1920x1080SYSTEM DIAGNOSTICS
POWER · VRAM & PCIe · RAMPOWER ESTIMATION
The Ryzen 9 3900X (105W) and RTX 2070 SUPER (215W) add up to roughly 320W under load. Adding 150W for the rest of the system gives 470W, and with a 30% transient margin, 650W is the safe figure.
VIDEO MEMORY AND PCIe
The RTX 2070 SUPER's memory bus (256-bit) and bandwidth (448 GB/s) describe its own video memory, meaning how fast the card reads its 8 GB of GDDR6, not the PCIe link to the processor. The PCIe link depends on the card, the processor and the motherboard slot together; our catalogue does not record PCIe generation or lane count, so the model does not estimate it. It matters most for cards with an eight-lane interface in older PCIe 3.0 boards: check the card's and the board's specifications.
SYSTEM MEMORY
This page assumes 16 GB in dual channel. At 1440p, the resolution recommended above, that meets the model's capacity target of 16 GB (enough for three in four of the games it covers), so more capacity would add little or nothing there. The target stays at 16 GB even at 4K, so a larger kit is for heavy multitasking or mods, not for these games. Memory speed and a second channel act on the processor's ceiling instead: they matter in the games the CPU limits, by an amount that depends on the game, and the calculator lets you enter your own kit.
HOW THIS PAGE IS CALCULATED
ENGINE v2026.08 · 2026-09-11CALCULATED, NOT WRITTEN
Every figure and every sentence comes from the same deterministic engine, driven by the catalogue specifications. That is what makes it reproducible: with the same engine version (2026.08) and the same catalogue, the same pairing always gives the same result. When either changes, the version and date above change with it, and the changelog says why.
WHERE THE DATA COMES FROM
Specifications come from the official AMD, Intel and NVIDIA datasheets together with PassMark and TechPowerUp. The gaming indices are calibrated against frame rates published by review outlets (TechPowerUp, TechSpot / Hardware Unboxed, Tom's Hardware, Gamers Nexus, Digital Foundry) rather than synthetic scores. That data is compiled, not measured here: this site runs no test bench of its own.
STATED LIMITS
Figures estimate native raster performance at high/ultra quality, with no ray tracing, upscaling or frame generation. We do not yet publish an externally validated error margin — the accuracy page states exactly where that stands.
* Affiliate disclosure: the Amazon links exist to show pricing. As an Amazon Associate we earn from qualifying purchases at no extra cost to you. Recommendation order is decided by the engine and does not depend on commission.
TRY WITH YOUR OWN HARDWARE
Customize RAM, resolution, and discover upgrade recommendations.
FREQUENTLY ASKED QUESTIONS
5Does the AMD Ryzen 9 3900X bottleneck the NVIDIA RTX 2070 SUPER?
At 1080p the two stay well balanced, whereas at 4K the RTX 2070 SUPER is the limiting part (~65% GPU bottleneck). Overall, the GPU is the limit at high resolution, with 53% average efficiency across the 12 resolutions our model tests. 1440p is the highest resolution that stays playable, at about 39 FPS on average in AAA titles.
How many FPS do the Ryzen 9 3900X and RTX 2070 SUPER get at 1080p?
At 1080p this combination averages about 56 FPS in AAA games and around 244 FPS in esports titles. In Valorant we estimate up to 401 FPS.
Is this pairing good for 4K gaming?
Not for AAA titles at native high settings: about 22 FPS on average at 4K. It would take upscaling, much lower settings or faster hardware.
What power supply do I need for the Ryzen 9 3900X and RTX 2070 SUPER?
With an estimated combined draw of 320W across CPU and GPU, we recommend at least a 650W 80+ Gold supply (ideally ATX 3.0) to run with headroom.
Is the RTX 2070 SUPER's 8 GB of VRAM enough?
8 GB falls short at 1440p for 3 of the 11 games the model tracks, and for 6 at 4K. In those titles expect to lower texture settings, or to see frame-time spikes if you do not.