AMD Radeon RX 6600 XT vs AMD Radeon RX 7800 XT
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 16GB VRAM Radeon RX 7800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6600 XT 's Advantages
Boost Clock has increased by 7% (2589MHz vs 2430MHz)
Lower TDP (160W vs 263W)
AMD Radeon RX 7800 XT 's Advantages
Released 2 years and 1 months late
More VRAM (16GB vs 8GB)
Larger VRAM bandwidth (624.1GB/s vs 256.0GB/s)
1792 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon RX 6600 XT
10.6 TFLOPS
Radeon RX 7800 XT
+252%
37.32 TFLOPS
3DMark Time Spy
Radeon RX 6600 XT
9656
Radeon RX 7800 XT
+108%
20086
3DMark Time Spy Extreme
Radeon RX 6600 XT
4399
Radeon RX 7800 XT
+114%
9448
3DMark Speed Way
Radeon RX 6600 XT
1675
Radeon RX 7800 XT
+137%
3978
Blender
Radeon RX 6600 XT
1196
Radeon RX 7800 XT
+121%
2652
Shadow of the Tomb Raider 2160p
Radeon RX 6600 XT
38
Radeon RX 7800 XT
+115%
82
Shadow of the Tomb Raider 1440p
Radeon RX 6600 XT
72
Radeon RX 7800 XT
+119%
158
Shadow of the Tomb Raider 1080p
Radeon RX 6600 XT
119
Radeon RX 7800 XT
+96%
234
Cyberpunk 2077 2160p
Radeon RX 6600 XT
29
Radeon RX 7800 XT
+31%
38
Cyberpunk 2077 1440p
Radeon RX 6600 XT
36
Radeon RX 7800 XT
+127%
82
Cyberpunk 2077 1080p
Radeon RX 6600 XT
58
Radeon RX 7800 XT
+117%
126
GTA 5 2160p
Radeon RX 6600 XT
61
Radeon RX 7800 XT
+129%
140
GTA 5 1440p
Radeon RX 6600 XT
82
Radeon RX 7800 XT
+70%
140
GTA 5 1080p
Radeon RX 6600 XT
149
Radeon RX 7800 XT
+27%
190
Horizon Forbidden West 1080p
Radeon RX 6600 XT
64
Radeon RX 7800 XT
+53%
98
Horizon Forbidden West 1440p
Radeon RX 6600 XT
48
Radeon RX 7800 XT
+68%
81
Horizon Forbidden West 2160p
Radeon RX 6600 XT
26
Radeon RX 7800 XT
+100%
52
Graphics Card
Jul 2021
Release Date
Aug 2023
Navi II
Generation
Navi III
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
PCIe 4.0 x16
Clock Speeds
1968 MHz
Base Clock
1295 MHz
2589 MHz
Boost Clock
2430 MHz
2000 MHz
Memory Clock
2438 MHz
Memory
8GB
Memory Size
16GB
GDDR6
Memory Type
GDDR6
128bit
Memory Bus
256bit
256.0GB/s
Bandwidth
624.1GB/s
Render Config
32
Compute Units
60
-
-
-
2048
Shading Units
3840
128
TMUs
240
64
ROPs
96
-
-
-
32
RT Cores
60
128 KB per Array
L1 Cache
128 KB per Array
2 MB
L2 Cache
4 MB
32 MB
L3 Cache
64 MB
Theoretical Performance
165.7 GPixel/s
Pixel Rate
233.3 GPixel/s
331.4 GTexel/s
Texture Rate
583.2 GTexel/s
21.21 TFLOPS
FP16 (half)
74.65 TFLOPS
10.60 TFLOPS
FP32 (float)
37.32 TFLOPS
662.8 GFLOPS
FP64 (double)
1166 GFLOPS
Board Design
160W
TDP
263W
450 W
Suggested PSU
600 W
1x HDMI 2.1
3x DisplayPort 1.4a
Outputs
1x HDMI 2.1a
3x DisplayPort 2.1
1x 8-pin
Power Connectors
2x 8-pin
Graphics Processor
Navi 23
GPU Name
Navi 32
Navi 23 XT
(215-130000006)
GPU Variant
Navi 32 XT
(215-180000006)
RDNA 2.0
Architecture
RDNA 3.0
TSMC
Foundry
TSMC
7 nm
Process Size
5 nm
11.06 billion
Transistors
28.1 billion
237 mm²
Die Size
346 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
2.1
OpenCL
2.2
1.3
Vulkan
1.3
-
-
-
6.7
Shader Model
6.7
