GeForce 840M vs GeForce RTX 4090
The GeForce 840M is much slower than the GeForce RTX 4090 on average across 100+ games. We cannot compare value as at least one GPU is out of stock.
FPS Comparison Across Popular Games
Predicted average FPS at 1080p, 1440p, and 4K, based on real game benchmarks.
Specs & Benchmark Comparison
Side-by-side specs, synthetic benchmarks, and key hardware differences.
FP32 Computehelp
GeForce RTX 4090 has 9467% more compute power.
Pixel Fillratehelp
GeForce RTX 4090 fills pixels 4832% faster.
Texture Fillratehelp
GeForce RTX 4090 maps textures 7076% faster.
Memory Bandwidthhelp
GeForce RTX 4090 moves data 6205% faster.
DDR3
Memory Typehelp
GDDR6X64-bit
Memory Bushelp
384-bitGeForce 800M
Generationhelp
GeForce 40Mobile
Segmenthelp
Desktop-
Power Connectorshelp
--
Outputshelp
-Frequently Asked Questions
compare_arrowsWhich is better, GeForce 840M or GeForce RTX 4090?expand_more
The GeForce RTX 4090. It's 7600% faster than the GeForce 840M on average across 100+ games, scoring 77/100 vs 1/100 in our gaming rating.
speedHow much faster is GeForce RTX 4090 than GeForce 840M?expand_more
7600% faster on average. The gap varies by game and resolution, check the per-game FPS comparison above.
aspect_ratioWhich is better for 1440p and 4K gaming, GeForce 840M or GeForce RTX 4090?expand_more
The GeForce RTX 4090 is faster at both resolutions. At 4K, VRAM matters more, check the specs section to compare memory. Toggle the resolution selector above to see per-game FPS.
paidIs the GeForce RTX 4090 worth buying in 2026?expand_more
It scores 77/100 in our gaming rating, faster than most GPUs on the market. Good buy if the price is right.
differenceWhat is the difference between GeForce 840M and GeForce RTX 4090?expand_more
Performance: GeForce 840M scores 1/100, GeForce RTX 4090 scores 77/100. They also differ in VRAM, memory bandwidth, power draw, and compute performance. Full breakdown in the specs section above.
compressWill the GeForce 840M or GeForce RTX 4090 bottleneck my PC?expand_more
Depends on the rest of your build, especially your CPU. Swap the paired CPU in the FPS section above to see if it limits performance, or use our bottleneck calculator for a full analysis.
upgradeIs it worth upgrading to the GeForce 840M or GeForce RTX 4090?expand_more
The GeForce RTX 4090 is the stronger pick at 77/100. Compare your current GPU against it to see the exact FPS gain across 100+ games.
memoryDoes VRAM matter when comparing the GeForce 840M and GeForce RTX 4090?expand_more
Yes, more VRAM helps at higher resolutions and in modded games. Check the specs section above to compare memory capacity and bandwidth between both GPUs.
Popular Comparisons
840M vs RX 9070840M vs RX 9060 XT 16 GB840M vs RTX 5070840M vs RX 9070 XT840M vs RTX 5060840M vs RTX 5080840M vs RX 6800Arc B580 vs 840MArc A310 vs 840M840M vs RTX 5060 TiArc A580 vs 840MArc A750 vs 840M840M vs RTX 5070 Ti840M vs R7 Graphics840M vs RX 580840M vs GTX 1660 SUPER840M vs R5 Graphics840M vs RX 560840M vs RTX 5090840M vs RX 6900 XT840M vs RX 7900 XTX840M vs Pro W5500840M vs Pro W5700840M vs R7 240840M vs R7 250Arc B570 vs 840MRTX 4090 vs RX 9070RTX 4090 vs RX 9060 XT 16 GBRTX 4090 vs RTX 5070RTX 4090 vs RX 9070 XTRTX 4090 vs RTX 5060RTX 4090 vs RTX 5080RTX 4090 vs RX 6800Arc B580 vs RTX 4090Arc A310 vs RTX 4090RTX 4090 vs RTX 5060 TiArc A580 vs RTX 4090Arc A750 vs RTX 4090RTX 4090 vs RTX 5070 TiRTX 4090 vs R7 GraphicsRTX 4090 vs RX 580GTX 1660 SUPER vs RTX 4090RTX 4090 vs R5 GraphicsRTX 4090 vs RX 560RTX 4090 vs RTX 5090RTX 4090 vs RX 6900 XTRTX 4090 vs RX 7900 XTXRTX 4090 vs Pro W5500RTX 4090 vs Pro W5700RTX 4090 vs R7 240RTX 4090 vs R7 250Arc B570 vs RTX 4090