NVIDIA GeForce RTX 4080 vs AMD Radeon RX 6600 XT
We compared two Desktop platform GPUs: 16GB VRAM GeForce RTX 4080 and 8GB VRAM Radeon RX 6600 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce RTX 4080 's Advantages
Released 1 years and 2 months late
More VRAM (16GB vs 8GB)
Larger VRAM bandwidth (716.8GB/s vs 256.0GB/s)
7680 additional rendering cores
AMD Radeon RX 6600 XT 's Advantages
Boost Clock has increased by 3% (2589MHz vs 2505MHz)
Lower TDP (160W vs 320W)
Score
Benchmark
FP32 (float)
GeForce RTX 4080
+359%
48.74 TFLOPS
Radeon RX 6600 XT
10.6 TFLOPS
3DMark Time Spy
GeForce RTX 4080
+191%
28173
Radeon RX 6600 XT
9656
3DMark Time Spy Extreme
GeForce RTX 4080
+218%
14002
Radeon RX 6600 XT
4399
3DMark Speed Way
GeForce RTX 4080
+333%
7254
Radeon RX 6600 XT
1675
Shadow of the Tomb Raider 2160p
GeForce RTX 4080
+247%
132
Radeon RX 6600 XT
38
Shadow of the Tomb Raider 1440p
GeForce RTX 4080
+241%
246
Radeon RX 6600 XT
72
Shadow of the Tomb Raider 1080p
GeForce RTX 4080
+152%
300
Radeon RX 6600 XT
119
Cyberpunk 2077 2160p
GeForce RTX 4080
+151%
73
Radeon RX 6600 XT
29
Cyberpunk 2077 1440p
GeForce RTX 4080
+236%
121
Radeon RX 6600 XT
36
Cyberpunk 2077 1080p
GeForce RTX 4080
+210%
180
Radeon RX 6600 XT
58
Battlefield 5 2160p
GeForce RTX 4080
+112%
123
Radeon RX 6600 XT
58
Battlefield 5 1440p
GeForce RTX 4080
+48%
165
Radeon RX 6600 XT
111
Battlefield 5 1080p
GeForce RTX 4080
+30%
188
Radeon RX 6600 XT
144
GTA 5 2160p
GeForce RTX 4080
+106%
126
Radeon RX 6600 XT
61
GTA 5 1440p
GeForce RTX 4080
+120%
181
Radeon RX 6600 XT
82
GTA 5 1080p
GeForce RTX 4080
+22%
182
Radeon RX 6600 XT
149
Horizon Forbidden West 1080p
GeForce RTX 4080
+110%
135
Radeon RX 6600 XT
64
Horizon Forbidden West 1440p
GeForce RTX 4080
+125%
108
Radeon RX 6600 XT
48
Horizon Forbidden West 2160p
GeForce RTX 4080
+176%
72
Radeon RX 6600 XT
26
Graphics Card
Sep 2022
Release Date
Jul 2021
GeForce 40
Generation
Navi II
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 4.0 x8
Clock Speeds
2205 MHz
Base Clock
1968 MHz
2505 MHz
Boost Clock
2589 MHz
1400 MHz
Memory Clock
2000 MHz
Memory
16GB
Memory Size
8GB
GDDR6X
Memory Type
GDDR6
256bit
Memory Bus
128bit
716.8GB/s
Bandwidth
256.0GB/s
Render Config
-
Compute Units
32
76
SM Count
-
9728
Shading Units
2048
304
TMUs
128
112
ROPs
64
304
Tensor Cores
-
76
RT Cores
32
128 KB (per SM)
L1 Cache
128 KB per Array
64 MB
L2 Cache
2 MB
-
L3 Cache
32 MB
Theoretical Performance
280.6 GPixel/s
Pixel Rate
165.7 GPixel/s
761.5 GTexel/s
Texture Rate
331.4 GTexel/s
48.74 TFLOPS
FP16 (half)
21.21 TFLOPS
48.74 TFLOPS
FP32 (float)
10.60 TFLOPS
761.5 GFLOPS
FP64 (double)
662.8 GFLOPS
Board Design
320W
TDP
160W
700 W
Suggested PSU
450 W
1x HDMI 2.1
3x DisplayPort 1.4a
Outputs
1x HDMI 2.1
3x DisplayPort 1.4a
1x 16-pin
Power Connectors
1x 8-pin
Graphics Processor
AD103
GPU Name
Navi 23
AD103-300-A1
GPU Variant
Navi 23 XT
(215-130000006)
Ada Lovelace
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
5 nm
Process Size
7 nm
45.9 billion
Transistors
11.06 billion
379 mm²
Die Size
237 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
3.0
OpenCL
2.1
1.3
Vulkan
1.3
8.9
CUDA
-
6.7
Shader Model
6.7
