AMD Radeon HD 7850 vs AMD Radeon Sky 900
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7850 and 3GB VRAM Radeon Sky 900 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7850 's Advantages
Lower TDP (130W vs 300W)
AMD Radeon Sky 900 's Advantages
Released 1 years late
Boost Clock950MHz
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (240.0GB/s vs 153.6GB/s)
768 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 7850
1.761 TFLOPS
Radeon Sky 900
+93%
3.405 TFLOPS
Graphics Card
Mar 2012
Release Date
Mar 2013
Southern Islands
Generation
Radeon Sky
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
825 MHz
-
Boost Clock
950 MHz
1200 MHz
Memory Clock
1250 MHz
Memory
2GB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
384bit
153.6GB/s
Bandwidth
240.0GB/s
Render Config
16
Compute Units
28
-
-
-
1024
Shading Units
1792
64
TMUs
112
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
768 KB
-
-
-
Theoretical Performance
27.52 GPixel/s
Pixel Rate
30.40 GPixel/s
55.04 GTexel/s
Texture Rate
106.4 GTexel/s
-
-
-
1.761 TFLOPS
FP32 (float)
3.405 TFLOPS
110.1 GFLOPS
FP64 (double)
851.2 GFLOPS
Board Design
130W
TDP
300W
300 W
Suggested PSU
700 W
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
Outputs
1x DVI
1x mini-DisplayPort 1.2
1x 6-pin
Power Connectors
2x 8-pin
Graphics Processor
Pitcairn
GPU Name
Tahiti
Pitcairn PRO
(215-0828062)
GPU Variant
Orthrus
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
2.8 billion
Transistors
4.313 billion
212 mm²
Die Size
352 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
