Radeon RX 7900 XT vs A40 PCIe
We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7900 XT and 48GB VRAM A40 PCIe to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 7900 XT 's Advantages
Released 2 years and 1 months late
Boost Clock has increased by 38% (2394MHz vs 1740MHz)
Larger VRAM bandwidth (800.0GB/s vs 695.8GB/s)
A40 PCIe 's Advantages
More VRAM (48GB vs 20GB)
5376 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon RX 7900 XT
+37%
51480
A40 PCIe
37420
Blender
Radeon RX 7900 XT
3905
A40 PCIe
+2%
3990
Graphics Card
Nov 2022
Release Date
Oct 2020
Navi III
Generation
Tesla
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
1387 MHz
Base Clock
1305 MHz
2394 MHz
Boost Clock
1740 MHz
2500 MHz
Memory Clock
1812 MHz
Memory
20GB
Memory Size
48GB
GDDR6
Memory Type
GDDR6
320bit
Memory Bus
384bit
800.0GB/s
Bandwidth
695.8GB/s
Render Config
84
Compute Units
-
-
SM Count
84
5376
Shading Units
10752
336
TMUs
336
192
ROPs
112
-
Tensor Cores
336
84
RT Cores
84
256 KB per Array
L1 Cache
128 KB (per SM)
6 MB
L2 Cache
6 MB
80 MB
L3 Cache
-
Theoretical Performance
459.6 GPixel/s
Pixel Rate
194.9 GPixel/s
804.4 GTexel/s
Texture Rate
584.6 GTexel/s
103.0 TFLOPS
FP16 (half)
37.42 TFLOPS
51.48 TFLOPS
FP32 (float)
37.42 TFLOPS
1.609 TFLOPS
FP64 (double)
584.6 GFLOPS
Board Design
300W
TDP
300W
700 W
Suggested PSU
700 W
1x HDMI 2.1a
2x DisplayPort 2.1
1x USB Type-C
Outputs
3x DisplayPort 1.4a
2x 8-pin
Power Connectors
8-pin EPS
Graphics Processor
Navi 31
GPU Name
GA102
Navi 31 XT
(215-145000156)
GPU Variant
-
RDNA 3.0
Architecture
Ampere
TSMC
Foundry
Samsung
5 nm
Process Size
8 nm
57.7 billion
Transistors
28.3 billion
529 mm²
Die Size
628 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
2.2
OpenCL
3.0
1.3
Vulkan
1.3
-
CUDA
8.6
6.7
Shader Model
6.6