AMD Radeon RX 6600 XT VS NVIDIA GeForce RTX 4090

amd

Brand

8GB GDDR6

Memory

2048

Cores

256 GB/s

Bandwidth

Radeon RX 6600 XT

$299.99 Jul 2021 View Details

$299.99

nvidia

Brand

24GB GDDR6X

Memory

16384

Cores

1010 GB/s

Bandwidth

GeForce RTX 4090

$2,591.99 Sep 2022 View Details

$2,591.99

AMD Radeon RX 6600 XT

8GB GDDR6 160W $299.99 Jul 2021

Radeon RX 6600 XT

$379 • Jul 2021

GeForce RTX 4090

$1599 • Sep 2022

NVIDIA GeForce RTX 4090

24GB GDDR6X 450W $2,591.99 Sep 2022

Specs Comparison

Specification	AMD Radeon RX 6600 XT	NVIDIA GeForce RTX 4090
Memory Size	8 GB	24 GB
Memory Type	GDDR6	GDDR6X
TDP	160 W	450 W
Core Clock	N/A	N/A
Boost Clock	2589 MHz	2520 MHz
Memory Bandwidth	256 GB/s	1010 GB/s
Process Size	7nm	5nm
Architecture	RDNA 2.0	Ada Lovelace
Shading Units	2048	16384
RT Cores	32	128
TMUs	128	512
ROPs	64	176
Memory Bus	128-bit	384-bit
Memory Clock	2000 MHz	1313 MHz
Pixel Rate	165.7 GPixel/s	443.5 GPixel/s
Texture Rate	256 GTexel/s	1.01 GTexel/s
FP32 Performance	10.6 GFLOPS	82.58 GFLOPS
L2 Cache	2.00 MB	72.00 MB
Die Size	237 mm²	609 mm²
Transistors	11060 Million	76300 Million
Required PSU	450 W	850 W
Power Connectors	1x 8-pin	1x 16-pin
Bus Interface	PCIe 4.0 x8	PCIe 4.0 x16
DirectX	12.2	12.2
Vulkan	1.3	1.3
OpenGL	4.6	4.6
Foundry	TSMC	TSMC

Comparison in Synthetic Benchmarks

3DMark Time Spy

Synthetic DirectX 12 benchmark that measures GPU performance in gaming workloads

Graphics Score

9026

AMD Radeon RX 6600 XT

42193 (+367%)

NVIDIA GeForce RTX 4090

Geekbench 6

Cross-platform benchmark that measures GPU compute performance using OpenCL and Metal APIs

OpenCL Score

84088

AMD Radeon RX 6600 XT

316301 (+276%)

NVIDIA GeForce RTX 4090

GFXBench 5.0

Cross-platform 3D graphics benchmark suite that measures GPU performance across different APIs

Aztec Ruins High (FPS)

116.8 FPS

AMD Radeon RX 6600 XT

615.9 FPS (+427%)

NVIDIA GeForce RTX 4090

PassMark G2D

Comprehensive 2D graphics benchmark that measures GPU performance in various graphics operations

G2D Mark

16474

AMD Radeon RX 6600 XT

38309 (+133%)

NVIDIA GeForce RTX 4090

Game Benchmarks Comparison (318 benchmarks)

Split Fiction

8.7 2025 • Action, Adventure • Hazelight Studios

1080p

| ultra

GeForce RTX 4090 (+278%)

AVG 295 FPS

MIN 258 FPS

Radeon RX 6600 XT

AVG 78 FPS

MIN 66 FPS

1440p

| ultra

GeForce RTX 4090 (+309%)

AVG 237 FPS

MIN 206 FPS

Radeon RX 6600 XT

AVG 58 FPS

MIN 48 FPS

2160p

| ultra

GeForce RTX 4090 (+364%)

AVG 153 FPS

MIN 137 FPS

Radeon RX 6600 XT

AVG 33 FPS

MIN 28 FPS

Winner

Loser

Marvel's Spider-Man 2

7.9 2025 • Action, Adventure • Insomniac Games, Nixxes Software

1080p

| ultra

GeForce RTX 4090 (+218%)

AVG 159 FPS

MIN 117 FPS

Radeon RX 6600 XT

AVG 50 FPS

MIN 38 FPS

1440p

| ultra

GeForce RTX 4090 (+384%)

AVG 155 FPS

MIN 114 FPS

Radeon RX 6600 XT

AVG 32 FPS

MIN 27 FPS

2160p

| ultra

GeForce RTX 4090 (+461%)

AVG 101 FPS

MIN 69 FPS

Radeon RX 6600 XT

AVG 18 FPS

MIN 14 FPS

1080p

| ultra

| RTX

GeForce RTX 4090 (+600%)

AVG 91 FPS

MIN 70 FPS

Radeon RX 6600 XT

AVG 13 FPS

MIN 10 FPS

1440p

| ultra

| RTX

GeForce RTX 4090 (+833%)

AVG 84 FPS

MIN 58 FPS

Radeon RX 6600 XT

AVG 9 FPS

MIN 6 FPS

2160p

| ultra

| RTX

GeForce RTX 4090 (+1600%)

AVG 51 FPS

MIN 37 FPS

Radeon RX 6600 XT

AVG 3 FPS

MIN 2 FPS

Winner

Loser

Sniper Elite Resistance

8.5 2025 • Action, Adventure • Rebellion

1080p

| ultra

GeForce RTX 4090 (+246%)

AVG 343 FPS

MIN 318 FPS

Radeon RX 6600 XT

AVG 99 FPS

MIN 82 FPS

1440p

| ultra

GeForce RTX 4090 (+274%)

AVG 277 FPS

MIN 235 FPS

Radeon RX 6600 XT

AVG 74 FPS

MIN 64 FPS

2160p

| ultra

GeForce RTX 4090 (+324%)

AVG 174 FPS

MIN 153 FPS

Radeon RX 6600 XT

AVG 41 FPS

MIN 33 FPS

Winner

Loser

FINAL FANTASY VII REBIRTH

8.1 2025 • Action, Adventure, RPG • Square Enix

1080p

| ultra

GeForce RTX 4090 (+298%)

AVG 171 FPS

MIN 155 FPS

Radeon RX 6600 XT

AVG 43 FPS

MIN 37 FPS

1440p

| ultra

GeForce RTX 4090 (+292%)

AVG 141 FPS

MIN 127 FPS

Radeon RX 6600 XT

AVG 36 FPS

MIN 30 FPS

2160p

| ultra

GeForce RTX 4090 (+362%)

AVG 97 FPS

MIN 85 FPS

Radeon RX 6600 XT

AVG 21 FPS

MIN 18 FPS

Winner

Loser

Assetto Corsa EVO

6 2025 • Racing, Simulation, Sports, Early Access • KUNOS Simulazioni

1080p

| ultra

GeForce RTX 4090 (+869%)

AVG 126 FPS

MIN 96 FPS

Radeon RX 6600 XT

AVG 13 FPS

MIN 10 FPS

1440p

| ultra

GeForce RTX 4090 (+817%)

AVG 110 FPS

MIN 84 FPS

Radeon RX 6600 XT

AVG 12 FPS

MIN 9 FPS

2160p

| ultra

GeForce RTX 4090 (+690%)

AVG 79 FPS

MIN 66 FPS

Radeon RX 6600 XT

AVG 10 FPS

MIN 8 FPS

Winner

Loser

DYNASTY WARRIORS ORIGINS

8.6 2025 • Action, RPG, Strategy • KOEI TECMO GAMES CO., LTD.

1080p

| ultra

GeForce RTX 4090 (+155%)

AVG 240 FPS

MIN 240 FPS

Radeon RX 6600 XT

AVG 94 FPS

MIN 84 FPS

1440p

| ultra

GeForce RTX 4090 (+275%)

AVG 240 FPS

MIN 235 FPS

Radeon RX 6600 XT

AVG 64 FPS

MIN 52 FPS

2160p

| ultra

GeForce RTX 4090 (+359%)

AVG 156 FPS

MIN 137 FPS

Radeon RX 6600 XT

AVG 34 FPS

MIN 31 FPS

Winner

Loser

No more benchmarks available for this comparison

NVIDIA GeForce RTX 4090 Wins!

Based on 321 benchmarks across 93 games

Avg FPS

Radeon RX 6600 XT

+269.6%

151

Avg FPS

GeForce RTX 4090