Ryzen 9 3900X vs Ryzen 7 8700G: which is better

AMD Ryzen 9 3900X (desktop, 2019) against AMD Ryzen 7 8700G (desktop, 2024): benchmarks, games, specs and current prices.

Key differences

Ryzen 9 3900X is 3% faster in multi-threaded work (PassMark 32,463 vs 31,457).
Ryzen 7 8700G is 45% faster per core.
Ryzen 9 3900X is $114 cheaper ($147 vs $260).
Ryzen 9 3900X gives 83% more performance per dollar.
Ryzen 7 8700G has a lower TDP: 65 W vs 105 W.
Different sockets (AM4 and AM5): they need different motherboards.

Open the full duel

	Ryzen 9 3900X	Ryzen 7 8700G
Overall score	45.0	43.6
PassMark CPU Mark	32,463	31,457
Single-thread rating	2,702	3,919
US price	from $147	from $260
Cores	12	8
Threads	24	16
Base clock	3.8 GHz	4.2 GHz
Max boost	4.6 GHz	5.1 GHz
L3 cache	64 MB	16 MB
TDP	105 W	65 W
Max power	142 W	88 W
Memory	DDR4	DDR5
Memory speed	3200 MT/s	5200 MT/s
PCI Express	PCIe 4.0	PCIe 4.0
Socket	AM4	AM5
Process	7 nm (TSMC N7)	4 nm (TSMC N4)
Architecture	Zen 2	Zen 4
Series	Ryzen 3000	Ryzen 8000G
Release year	2019	2024
Integrated graphics	none	Radeon 780M

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