AMD Radeon R9 270X vs AMD Radeon HD 6850 X2
GPU Specs Compare
Graphics Card
Release Date
Oct 2013
Sep 2011
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
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
179.2GB/s
134.4GB/s
Render Config
Compute Units
20
12
Shading Units
1280
960
TMUs
80
48
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
25.60 GPixel/s
Texture Rate
84.00 GTexel/s
38.40 GTexel/s
FP32 (float)
2.688 TFLOPS
1.536 TFLOPS
FP64 (double)
168.0 GFLOPS
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Graphics Processor
GPU Name
Curacao
Barts
GPU Variant
Curacao XT(215-0848004)
Barts PRO(215-0798006)
Architecture
GCN 1.0
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
2.8 billion
1.7 billion
Die Size
212 mm²
255 mm²
Board Design
TDP
180W
254W
Suggested PSU
450 W
600 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Power Connectors
2x 6-pin
2x 8-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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