Arc B580 vs GeForce GT 420M
The Arc B580 is much faster than the GeForce GT 420M 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.
GDDR6
Memory Typehelp
DDR3192-bit
Memory Bushelp
128-bitBattlemage (Arc 5)
Generationhelp
GeForce 400MDesktop
Segmenthelp
Mobile-
Power Connectorshelp
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Outputshelp
-Frequently Asked Questions
compare_arrowsWhich is better, Arc B580 or GeForce GT 420M?expand_more
Neither, they're within 1% of each other across 100+ games. Pick based on price, availability, or VRAM.
aspect_ratioWhich is better for 1440p and 4K gaming, Arc B580 or GeForce GT 420M?expand_more
The Arc B580 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 Arc B580 worth buying in 2026?expand_more
It scores 31/100 in our gaming rating, faster than most GPUs on the market. Good buy if the price is right.
differenceWhat is the difference between Arc B580 and GeForce GT 420M?expand_more
Performance: Arc B580 scores 31/100, GeForce GT 420M scores 0/100. They also differ in VRAM, memory bandwidth, power draw, and compute performance. Full breakdown in the specs section above.
compressWill the Arc B580 or GeForce GT 420M 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 Arc B580 or GeForce GT 420M?expand_more
The Arc B580 is the stronger pick at 31/100. Compare your current GPU against it to see the exact FPS gain across 100+ games.
memoryDoes VRAM matter when comparing the Arc B580 and GeForce GT 420M?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
Arc B580 vs RX 9070Arc B580 vs RX 9060 XT 16 GBArc B580 vs RTX 5070Arc B580 vs RX 9070 XTArc B580 vs RTX 5060Arc B580 vs RTX 5080Arc B580 vs RX 6800Arc A310 vs Arc B580Arc B580 vs RTX 5060 TiArc A580 vs Arc B580Arc A750 vs Arc B580Arc B580 vs RTX 5070 TiArc B580 vs R7 GraphicsArc B580 vs RX 580Arc B580 vs GTX 1660 SUPERArc B580 vs R5 GraphicsArc B580 vs RX 560Arc B580 vs RTX 5090Arc B580 vs RTX 4090Arc B580 vs RX 6900 XTArc B580 vs RX 7900 XTXArc B580 vs Pro W5500Arc B580 vs Pro W5700Arc B580 vs R7 240Arc B580 vs R7 250Arc B570 vs Arc B580GT 420M vs RX 9070GT 420M vs RX 9060 XT 16 GBGT 420M vs RTX 5070GT 420M vs RX 9070 XTGT 420M vs RTX 5060GT 420M vs RTX 5080GT 420M vs RX 6800Arc A310 vs GT 420MGT 420M vs RTX 5060 TiArc A580 vs GT 420MArc A750 vs GT 420MGT 420M vs RTX 5070 TiGT 420M vs R7 GraphicsGT 420M vs RX 580GT 420M vs GTX 1660 SUPERGT 420M vs R5 GraphicsGT 420M vs RX 560GT 420M vs RTX 5090GT 420M vs RTX 4090GT 420M vs RX 6900 XTGT 420M vs RX 7900 XTXGT 420M vs Pro W5500GT 420M vs Pro W5700GT 420M vs R7 240GT 420M vs R7 250Arc B570 vs GT 420M