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GPU Comparison
ATI Radeon HD 2900 XT vs AMD Radeon R9 270X
ATI Radeon HD 2900 XT vs AMD Radeon R9 270X
VS
ATI Radeon HD 2900 XT
AMD Radeon R9 270X
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 XT and 2GB VRAM Radeon R9 270X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 270X 's Advantages
Released 6 years and 5 months late
Boost Clock1050MHz
Larger VRAM bandwidth (179.2GB/s vs 106.0GB/s)
960 additional rendering cores
Lower TDP (180W vs 215W)
Score
Benchmark
FP32 (float)
Radeon HD 2900 XT
0.476 TFLOPS
Radeon R9 270X
+464%
2.688 TFLOPS
Radeon HD 2900 XT
VS
Radeon R9 270X
Graphics Card
May 2007
Release Date
Oct 2013
Radeon R600
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 1.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
1000 MHz
-
Boost Clock
1050 MHz
828 MHz
Memory Clock
1400 MHz
Memory
512MB
Memory Size
2GB
GDDR3
Memory Type
GDDR5
512bit
Memory Bus
256bit
106.0GB/s
Bandwidth
179.2GB/s
Render Config
-
SM Count
-
4
Compute Units
20
320
Shading Units
1280
16
TMUs
80
16
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
-
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
512 KB
Theoretical Performance
11.89 GPixel/s
Pixel Rate
33.60 GPixel/s
11.89 GTexel/s
Texture Rate
84.00 GTexel/s
-
FP16 (half)
-
475.5 GFLOPS
FP32 (float)
2.688 TFLOPS
-
FP64 (double)
168.0 GFLOPS
Graphics Processor
R600
GPU Name
Curacao
R600 XT (215RGMDKA13FG)
GPU Variant
Curacao XT (215-0848004)
TeraScale
Architecture
GCN 1.0
TSMC
Foundry
TSMC
80 nm
Process Size
28 nm
0.72 billion
Transistors
2.8 billion
420 mm²
Die Size
212 mm²
Board Design
215W
TDP
180W
550 W
Suggested PSU
450 W
2x DVI 1x S-Video
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 6-pin + 1x 8-pin
Power Connectors
2x 6-pin
Graphics Features
10.0 (10_0)
DirectX
12 (11_1)
3.3 (full) 4.0 (partial)
OpenGL
4.6
N/A
OpenCL
1.2
N/A
Vulkan
1.2
-
CUDA
-
4.0
Shader Model
5.1
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