Home GPU Comparison AMD Radeon Sky 700 vs AMD Radeon R9 270X

AMD Radeon Sky 700 vs AMD Radeon R9 270X

We compared two Desktop platform GPUs: 6GB VRAM Radeon Sky 700 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 Sky 700 's Advantages
More VRAM (6GB vs 2GB)
Larger VRAM bandwidth (264.0GB/s vs 179.2GB/s)
512 additional rendering cores
AMD Radeon R9 270X 's Advantages
Released 7 months late
Boost Clock1050MHz
Lower TDP (180W vs 225W)

Score

Benchmark

FP32 (float)
Radeon Sky 700 +20%
3.226 TFLOPS
Radeon R9 270X
2.688 TFLOPS
VS

Graphics Card

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

Clock Speeds

-
Base Clock
1000 MHz
-
Boost Clock
1050 MHz
1375 MHz
Memory Clock
1400 MHz

Memory

6GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
264.0GB/s
Bandwidth
179.2GB/s

Render Config

28
Compute Units
20
-
-
-
1792
Shading Units
1280
112
TMUs
80
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

28.80 GPixel/s
Pixel Rate
33.60 GPixel/s
100.8 GTexel/s
Texture Rate
84.00 GTexel/s
-
-
-
3.226 TFLOPS
FP32 (float)
2.688 TFLOPS
806.4 GFLOPS
FP64 (double)
168.0 GFLOPS

Board Design

225W
TDP
180W
550 W
Suggested PSU
450 W
1x DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 8-pin
Power Connectors
2x 6-pin

Graphics Processor

Tahiti
GPU Name
Curacao
Tahiti PRO GL
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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