AMD Radeon RX 7900 XT vs ATI Radeon HD 2900 GT
We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7900 XT and 256MB VRAM Radeon HD 2900 GT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 7900 XT 's Advantages
Released 15 years late
Boost Clock2394MHz
More VRAM (20GB vs 256GB)
Larger VRAM bandwidth (800.0GB/s vs 51.20GB/s)
5136 additional rendering cores
ATI Radeon HD 2900 GT 's Advantages
Lower TDP (150W vs 300W)
Score
Benchmark
FP32 (float)
Radeon RX 7900 XT
+17775%
51.48 TFLOPS
Radeon HD 2900 GT
0.288 TFLOPS
Graphics Card
Nov 2022
Release Date
Nov 2007
Navi III
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
1387 MHz
Base Clock
-
2394 MHz
Boost Clock
-
2500 MHz
Memory Clock
800 MHz
Memory
20GB
Memory Size
256MB
GDDR6
Memory Type
GDDR3
320bit
Memory Bus
256bit
800.0GB/s
Bandwidth
51.20GB/s
Render Config
84
Compute Units
3
-
-
-
5376
Shading Units
240
336
TMUs
12
192
ROPs
12
-
-
-
84
RT Cores
-
256 KB per Array
L1 Cache
-
6 MB
L2 Cache
128 KB
80 MB
L3 Cache
-
Theoretical Performance
459.6 GPixel/s
Pixel Rate
7.212 GPixel/s
804.4 GTexel/s
Texture Rate
7.212 GTexel/s
103.0 TFLOPS
FP16 (half)
-
51.48 TFLOPS
FP32 (float)
288.5 GFLOPS
1.609 TFLOPS
FP64 (double)
-
Board Design
300W
TDP
150W
700 W
Suggested PSU
450 W
1x HDMI 2.1a
2x DisplayPort 2.1
1x USB Type-C
Outputs
2x DVI
1x S-Video
2x 8-pin
Power Connectors
1x 8-pin
Graphics Processor
Navi 31
GPU Name
R600
Navi 31 XT
(215-145000156)
GPU Variant
R600 GT
(215RGFDKA13FG)
RDNA 3.0
Architecture
TeraScale
TSMC
Foundry
TSMC
5 nm
Process Size
80 nm
57.7 billion
Transistors
0.72 billion
529 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
