Radeon RX 6400 vs Radeon HD 2900 GT
We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 256MB VRAM Radeon HD 2900 GT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6400 's Advantages
Released 14 years and 2 months late
Boost Clock2321MHz
More VRAM (4GB vs 256GB)
Larger VRAM bandwidth (128.0GB/s vs 51.20GB/s)
528 additional rendering cores
Lower TDP (53W vs 150W)
Score
Benchmark
FP32 (float)
Radeon RX 6400
+1137%
3565
Radeon HD 2900 GT
288
Graphics Card
Jan 2022
Release Date
Nov 2007
Navi II
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 4.0 x4
Bus Interface
PCIe 1.0 x16
Clock Speeds
1923 MHz
Base Clock
-
2321 MHz
Boost Clock
-
2000 MHz
Memory Clock
800 MHz
Memory
4GB
Memory Size
256MB
GDDR6
Memory Type
GDDR3
64bit
Memory Bus
256bit
128.0GB/s
Bandwidth
51.20GB/s
Render Config
12
Compute Units
3
768
Shading Units
240
48
TMUs
12
32
ROPs
12
12
RT Cores
-
128 KB per Array
L1 Cache
-
1024 KB
L2 Cache
128 KB
16 MB
L3 Cache
-
Theoretical Performance
74.27 GPixel/s
Pixel Rate
7.212 GPixel/s
111.4 GTexel/s
Texture Rate
7.212 GTexel/s
7.130 TFLOPS
FP16 (half)
-
3.565 TFLOPS
FP32 (float)
288.5 GFLOPS
222.8 GFLOPS
FP64 (double)
-
Board Design
53W
TDP
150W
250 W
Suggested PSU
450 W
1x HDMI 2.1
1x DisplayPort 1.4a
Outputs
2x DVI
1x S-Video
None
Power Connectors
1x 8-pin
Graphics Processor
Navi 24
GPU Name
R600
Navi 24 XL
(215-135000046)
GPU Variant
R600 GT
(215RGFDKA13FG)
RDNA 2.0
Architecture
TeraScale
TSMC
Foundry
TSMC
6 nm
Process Size
80 nm
5.4 billion
Transistors
0.72 billion
107 mm²
Die Size
420 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
10.0 (10_0)
4.6
OpenGL
3.3 (full)
4.0 (partial)
2.2
OpenCL
N/A
1.3
Vulkan
N/A
6.7
Shader Model
4.0
