Radeon RX 7900 XT vs GeForce 8400 GS PCI
We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7900 XT and 512MB VRAM GeForce 8400 GS PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 7900 XT 's Advantages
Released 14 years and 11 months late
Boost Clock2394MHz
More VRAM (20GB vs 512GB)
Larger VRAM bandwidth (800.0GB/s vs 5.328GB/s)
5368 additional rendering cores
GeForce 8400 GS PCI 's Advantages
Lower TDP (25W vs 300W)
Score
Benchmark
FP32 (float)
Radeon RX 7900 XT
+233900%
51480
GeForce 8400 GS PCI
22
Graphics Card
Nov 2022
Release Date
Dec 2007
Navi III
Generation
GeForce 8
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCI
Clock Speeds
1387 MHz
Base Clock
-
2394 MHz
Boost Clock
-
2500 MHz
Memory Clock
333 MHz
Memory
20GB
Memory Size
512MB
GDDR6
Memory Type
DDR2
320bit
Memory Bus
64bit
800.0GB/s
Bandwidth
5.328GB/s
Render Config
84
Compute Units
-
-
SM Count
1
5376
Shading Units
8
336
TMUs
4
192
ROPs
4
84
RT Cores
-
256 KB per Array
L1 Cache
-
6 MB
L2 Cache
16 KB
80 MB
L3 Cache
-
Theoretical Performance
459.6 GPixel/s
Pixel Rate
2.268 GPixel/s
804.4 GTexel/s
Texture Rate
2.268 GTexel/s
103.0 TFLOPS
FP16 (half)
-
51.48 TFLOPS
FP32 (float)
22.40 GFLOPS
1.609 TFLOPS
FP64 (double)
-
Board Design
300W
TDP
25W
700 W
Suggested PSU
200 W
1x HDMI 2.1a
2x DisplayPort 2.1
1x USB Type-C
Outputs
1x S-Video
1x DMS-59
2x 8-pin
Power Connectors
None
Graphics Processor
Navi 31
GPU Name
G98
Navi 31 XT
(215-145000156)
GPU Variant
G98-400-U2
RDNA 3.0
Architecture
Tesla
TSMC
Foundry
TSMC
5 nm
Process Size
65 nm
57.7 billion
Transistors
0.21 billion
529 mm²
Die Size
86 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
2.2
OpenCL
1.1
1.3
Vulkan
N/A
-
CUDA
1.1
6.7
Shader Model
4.0