Home GPU Comparison AMD Radeon R9 280X vs AMD Radeon R9 270X

AMD Radeon R9 280X vs AMD Radeon R9 270X

We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280X 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 280X 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (288.0GB/s vs 179.2GB/s)
768 additional rendering cores
AMD Radeon R9 270X 's Advantages
Boost Clock has increased by 5% (1050MHz vs 1000MHz)
Lower TDP (180W vs 250W)

Score

Benchmark

FP32 (float)
Radeon R9 280X +52%
4.096 TFLOPS
Radeon R9 270X
2.688 TFLOPS
3DMark Time Spy
Radeon R9 280X +32%
2348
Radeon R9 270X
1769
VS

Graphics Card

Oct 2013
Release Date
Oct 2013
Volcanic Islands
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

850 MHz
Base Clock
1000 MHz
1000 MHz
Boost Clock
1050 MHz
1500 MHz
Memory Clock
1400 MHz

Memory

3GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
288.0GB/s
Bandwidth
179.2GB/s

Render Config

32
Compute Units
20
-
-
-
2048
Shading Units
1280
128
TMUs
80
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

32.00 GPixel/s
Pixel Rate
33.60 GPixel/s
128.0 GTexel/s
Texture Rate
84.00 GTexel/s
-
-
-
4.096 TFLOPS
FP32 (float)
2.688 TFLOPS
1024 GFLOPS
FP64 (double)
168.0 GFLOPS

Board Design

250W
TDP
180W
600 W
Suggested PSU
450 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 6-pin + 1x 8-pin
Power Connectors
2x 6-pin

Graphics Processor

Tahiti
GPU Name
Curacao
Tahiti XTL (215-0821065)
GPU Variant
Curacao XT (215-0848004)
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
2.8 billion
352 mm²
Die Size
212 mm²

Graphics Features

12 (11_1)
DirectX
12 (11_1)
4.6
OpenGL
4.6
1.2
OpenCL
1.2
1.2
Vulkan
1.2
-
-
-
5.1
Shader Model
5.1

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