Home GPU Comparison ATI Radeon HD 2900 XTX vs AMD Radeon RX 6900 XTX

ATI Radeon HD 2900 XTX vs AMD Radeon RX 6900 XTX

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 XTX and 16GB VRAM Radeon RX 6900 XTX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2900 XTX 's Advantages
Lower TDP (240W vs 330W)
AMD Radeon RX 6900 XTX 's Advantages
Boost Clock2435MHz
More VRAM (16GB vs 512GB)
Larger VRAM bandwidth (576.0GB/s vs 106.0GB/s)
4800 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon HD 2900 XTX
0.476 TFLOPS
Radeon RX 6900 XTX +5137%
24.93 TFLOPS
VS

Graphics Card

Unknown
Release Date
Unknown
Radeon R600
Generation
Navi II
Desktop
Type
Desktop
PCIe 1.0 x16
Bus Interface
PCIe 4.0 x16

Clock Speeds

-
Base Clock
2075 MHz
-
Boost Clock
2435 MHz
828 MHz
Memory Clock
2250 MHz

Memory

512MB
Memory Size
16GB
GDDR3
Memory Type
GDDR6
512bit
Memory Bus
256bit
106.0GB/s
Bandwidth
576.0GB/s

Render Config

4
Compute Units
80
-
-
-
320
Shading Units
5120
16
TMUs
320
16
ROPs
128
-
-
-
-
RT Cores
80
-
L1 Cache
128 KB per Array
256 KB
L2 Cache
4 MB
-
L3 Cache
128 MB

Theoretical Performance

11.89 GPixel/s
Pixel Rate
311.7 GPixel/s
11.89 GTexel/s
Texture Rate
779.2 GTexel/s
-
FP16 (half)
49.87 TFLOPS
475.5 GFLOPS
FP32 (float)
24.93 TFLOPS
-
FP64 (double)
1.558 TFLOPS

Board Design

240W
TDP
330W
550 W
Suggested PSU
700 W
2x DVI 1x S-Video
Outputs
1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C
2x 6-pin
Power Connectors
2x 8-pin

Graphics Processor

R600
GPU Name
Navi 21
R600 XTX A11 (215RGMDKA11FG)
GPU Variant
Navi 21 XTXH (215-121000247)
TeraScale
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
80 nm
Process Size
7 nm
0.72 billion
Transistors
26.8 billion
420 mm²
Die Size
520 mm²

Graphics Features

10.0 (10_0)
DirectX
12 Ultimate (12_2)
3.3 (full) 4.0 (partial)
OpenGL
4.6
N/A
OpenCL
2.1
N/A
Vulkan
1.3
-
-
-
4.0
Shader Model
6.5

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