AMD Radeon R9 270X vs AMD Radeon HD 6870 1600SP Edition
GPU · Specs Compare
Graphics Card
Release Date
Oct 2013
Jan 2013
Generation
Volcanic Islands
Northern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Base Clock
1000 MHz
—
Boost Clock
1050 MHz
—
Memory Clock
1400 MHz
1050 MHz
Memory
Memory Size
2GB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
179.2GB/s
134.4GB/s
Render Config
Compute Units
20
20
Shading Units
1280
1600
TMUs
80
80
ROPs
32
32
L1 Cache
16 KB (per CU)
8 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
33.60 GPixel/s
27.20 GPixel/s
Texture Rate
84.00 GTexel/s
68.00 GTexel/s
FP32 (float)
2.688 TFLOPS
2.720 TFLOPS
FP64 (double)
168.0 GFLOPS
544.0 GFLOPS
Graphics Processor
GPU Name
Curacao
Cypress
GPU Variant
Curacao XT(215-0848004)
Cypress XT(215-0735033)
Architecture
GCN 1.0
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
2.8 billion
2.154 billion
Die Size
212 mm²
334 mm²
Board Design
TDP
180W
175W
Suggested PSU
450 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
Power Connectors
2x 6-pin
2x 6-pin
Graphics Features
DirectX
12 (11_1)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
1.2
1.2
Vulkan
1.2
N/A
Shader Model
5.1
5.0
Benchmark
3DMark Time Spy
1,769
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▲ Specs Compare
Data sourced from official specifications and benchmark tests.