CPU_VS_GPU / 2026-09-11
Intel Core i9-12900KvsNVIDIA RTX 4070 SUPER
Complete bottleneck analysis at 1080p, 1440p, Ultrawide (UWQHD/SUWQHD), and 4K with estimated FPS for popular games.
16%
ESTIMATED GPU BOTTLENECK
Your GPU (RTX 4070 SUPER) is the limiting factor at 2560x1440. In graphically demanding titles you will see lower frame rates; a faster GPU would deliver a clear improvement.
Load estimated by the model, not measured on your PC.
- PROCESSORIntel Core i9-12900K
- GRAPHICSNVIDIA RTX 4070 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 (495 W) plus headroom.
DEEP-DIVE ANALYSIS
GENERATED BY THE ENGINEAre the Intel Core i9-12900K and the NVIDIA RTX 4070 SUPER a good match? To find out we modelled the pair from 1080p up to 4K, cross-referencing the model's gaming scores for the CPU (82/100) and the GPU (49/100), calibrated against measured benchmarks rather than synthetic scores, with the demand profile of each game.
Bottom line: this pair carries 1440p
At 1080p the two stay well balanced, whereas at 4K the RTX 4070 SUPER is the limiting part (~44% GPU bottleneck). Of the common 16:9 sizes, the highest this pair holds above 60 FPS in AAA titles is 1440p, where it averages 71 FPS — that is the resolution worth buying a monitor for. Across every resolution tested, ultrawides included, the system runs at 69% average efficiency.
Think of resolution as a dial that splits the weight between CPU and GPU. Drop to 1080p and you wring out the RTX 4070 SUPER while leaning harder on the Core i9-12900K; push to 4K and the opposite happens. Synergy here swings between 56% and 96% depending on where you sit.
Translated into actual games: In esports titles like Valorant this pair flies — around 757 FPS at 1080p, plenty for a high-refresh monitor. At the other end, a demanding AAA like Alan Wake 2 drops to ~26 FPS at 4K, which is where the RTX 4070 SUPER's ceiling really shows. Overall, expect about 98 FPS average in AAA games at 1080p and around 46 FPS at 4K.
[CPU] Core i9-12900K
On the CPU side: the Core i9-12900K rates 82/100 for gaming in this model and brings 16 cores and 24 threads. At lower resolutions it's the one setting the pace for the whole system.
[GPU] RTX 4070 SUPER
The RTX 4070 SUPER (49/100 on the model's gaming scale) supplies the raster muscle of the build. Its 12 GB of GDDR6X set how far it can go on resolution and texture quality before video memory runs short.
Beyond the FPS: The graphics card is about 3 years newer than the processor, so watch that the Core i9-12900K doesn't fall short in the most CPU-dependent games. You're combining an Intel platform with an NVIDIA GPU — a perfectly valid mix that imposes no penalty.
DO YOU NEED TO CHANGE ANYTHING?
At 1440p the RTX 4070 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 Core i9-12900K still keeps it fully fed. The closest, the NVIDIA RTX 5090, adds about 39% 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] Intel Core i9-12900K
- Cores16C / 24T
- Clock3.2 – 5.2 GHz
- TDP125 W
- SocketLGA1700
- Single-thread4,155
- Multi-thread41,094
- L3 cache30 MB
[GPU] NVIDIA RTX 4070 SUPER
- VRAM12 GB GDDR6X
- Memory bus192-bit
- TDP220 W
- G3D Mark31,814
- Memory bandwidth504 GB/s
BOTTLENECK BY RESOLUTION
SYNERGY · AVERAGE FPSYour CPU (Core i9-12900K) and GPU (RTX 4070 SUPER) are an exceptionally balanced match for gaming at 1920x1080. No realistic component swap would meaningfully improve this build.
Your GPU (RTX 4070 SUPER) is the limiting factor at 2560x1440. In graphically demanding titles you will see lower frame rates; a faster GPU would deliver a clear improvement.
Your GPU (RTX 4070 SUPER) is the limiting factor at 3440x1440 (Ultrawide 21:9). In graphically demanding titles you will see lower frame rates; a faster GPU would deliver a clear improvement.
Your GPU (RTX 4070 SUPER) severely limits the system at 5120x1440 (Super Ultrawide 32:9), leaving the Core i9-12900K heavily underused. A faster GPU would improve performance dramatically.
Your GPU (RTX 4070 SUPER) severely limits the system at 4K, leaving the Core i9-12900K heavily underused. A faster GPU would improve performance dramatically.
ESTIMATED FPS BY GAME
1920x1080SYSTEM DIAGNOSTICS
POWER · VRAM & PCIe · RAMPOWER ESTIMATION
The Core i9-12900K (125W) and RTX 4070 SUPER (220W) add up to roughly 345W under load. Adding 150W for the rest of the system gives 495W, and with a 30% transient margin, 650W is the safe figure.
VIDEO MEMORY AND PCIe
The RTX 4070 SUPER's memory bus (192-bit) and bandwidth (504 GB/s) describe its own video memory, meaning how fast the card reads its 12 GB of GDDR6X, 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 Intel Core i9-12900K bottleneck the NVIDIA RTX 4070 SUPER?
At 1080p the two stay well balanced, whereas at 4K the RTX 4070 SUPER is the limiting part (~44% GPU bottleneck). Overall, the GPU is the limit at high resolution, with 69% average efficiency across the 12 resolutions our model tests. The resolution we would target with this pair is 1440p, where AAA games average 71 FPS.
How many FPS do the Core i9-12900K and RTX 4070 SUPER get at 1080p?
At 1080p this combination averages about 98 FPS in AAA games and around 447 FPS in esports titles. In Valorant we estimate up to 757 FPS.
Is this pairing good for 4K gaming?
Playable rather than smooth: about 46 FPS on average in AAA titles at 4K, with the RTX 4070 SUPER setting the limit. Upscaling (DLSS, FSR or XeSS) or lower settings are the usual way to reach 60 FPS.
What power supply do I need for the Core i9-12900K and RTX 4070 SUPER?
With an estimated combined draw of 345W across CPU and GPU, we recommend at least a 650W 80+ Gold supply (ideally ATX 3.0) to run with headroom.
Is the RTX 4070 SUPER's 12 GB of VRAM enough?
12 GB covers all 11 tracked games at 1440p in the model; at 4K, 3 of them would need more, which costs frames or texture quality in those titles.