AMD Radeon RX 7900 XT vs AMD Radeon RX 8800 XT
We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7900 XT and 16GB VRAM Radeon RX 8800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 7900 XT 's Advantages
More VRAM (20GB vs 16GB)
Larger VRAM bandwidth (800.0GB/s vs 624.1GB/s)
1280 additional rendering cores
AMD Radeon RX 8800 XT 's Advantages
Boost Clock has increased by 2% (2430MHz vs 2394MHz)
Lower TDP (220W vs 300W)
Score
Benchmark
FP32 (float)
Radeon RX 7900 XT
+158%
51.48 TFLOPS
Radeon RX 8800 XT
19.91 TFLOPS
Graphics Card
Nov 2022
Release Date
Unknown
Navi III
Generation
Navi IV(RX 8000)
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
1387 MHz
Base Clock
1295 MHz
2394 MHz
Boost Clock
2430 MHz
2500 MHz
Memory Clock
2438 MHz
Memory
20GB
Memory Size
16GB
GDDR6
Memory Type
GDDR6
320bit
Memory Bus
256bit
800.0GB/s
Bandwidth
624.1GB/s
Render Config
84
Compute Units
64
-
-
-
5376
Shading Units
4096
336
TMUs
256
192
ROPs
96
-
-
-
84
RT Cores
64
256 KB per Array
L1 Cache
128 KB per Array
6 MB
L2 Cache
4 MB
80 MB
L3 Cache
64 MB
Theoretical Performance
459.6 GPixel/s
Pixel Rate
233.3 GPixel/s
804.4 GTexel/s
Texture Rate
622.1 GTexel/s
103.0 TFLOPS
FP16 (half)
39.81 TFLOPS
51.48 TFLOPS
FP32 (float)
19.91 TFLOPS
1.609 TFLOPS
FP64 (double)
622.1 GFLOPS
Board Design
300W
TDP
220W
700 W
Suggested PSU
550 W
1x HDMI 2.1a
2x DisplayPort 2.1
1x USB Type-C
Outputs
1x HDMI 2.1a3x DisplayPort 2.1
2x 8-pin
Power Connectors
2x 8-pin
Graphics Processor
Navi 31
GPU Name
Navi 48
Navi 31 XT
(215-145000156)
GPU Variant
Navi 48 XT
RDNA 3.0
Architecture
RDNA 4.0
TSMC
Foundry
TSMC
5 nm
Process Size
4 nm
57.7 billion
Transistors
Unknown
529 mm²
Die Size
Unknown
Graphics Features
12 Ultimate (12_2)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
2.2
OpenCL
2.2
1.3
Vulkan
1.3
-
-
-
6.7
Shader Model
6.8
