Home GPU Comparison AMD Radeon R9 270X vs ATI Radeon HD 2900 XTX

AMD Radeon R9 270X vs ATI Radeon HD 2900 XTX

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270X and 512MB VRAM Radeon HD 2900 XTX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270X 's Advantages
Boost Clock1050MHz
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (179.2GB/s vs 106.0GB/s)
960 additional rendering cores
Lower TDP (180W vs 240W)

Score

Benchmark

FP32 (float)
Radeon R9 270X +464%
2.688 TFLOPS
Radeon HD 2900 XTX
0.476 TFLOPS
VS

Graphics Card

Oct 2013
Release Date
Unknown
Volcanic Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 1.0 x16

Clock Speeds

1000 MHz
Base Clock
-
1050 MHz
Boost Clock
-
1400 MHz
Memory Clock
828 MHz

Memory

2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
512bit
179.2GB/s
Bandwidth
106.0GB/s

Render Config

20
Compute Units
4
-
-
-
1280
Shading Units
320
80
TMUs
16
32
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

33.60 GPixel/s
Pixel Rate
11.89 GPixel/s
84.00 GTexel/s
Texture Rate
11.89 GTexel/s
-
-
-
2.688 TFLOPS
FP32 (float)
475.5 GFLOPS
168.0 GFLOPS
FP64 (double)
-

Board Design

180W
TDP
240W
450 W
Suggested PSU
550 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x S-Video
2x 6-pin
Power Connectors
2x 6-pin

Graphics Processor

Curacao
GPU Name
R600
Curacao XT (215-0848004)
GPU Variant
R600 XTX A11 (215RGMDKA11FG)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
80 nm
2.8 billion
Transistors
0.72 billion
212 mm²
Die Size
420 mm²

Graphics Features

12 (11_1)
DirectX
10.0 (10_0)
4.6
OpenGL
3.3 (full) 4.0 (partial)
1.2
OpenCL
N/A
1.2
Vulkan
N/A
-
-
-
5.1
Shader Model
4.0

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