Radeon R9 280 vs Radeon HD 6850
We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280 and 1024MB VRAM Radeon HD 6850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon R9 280 's Advantages
Released 3 years and 5 months late
Boost Clock933MHz
More VRAM (3GB vs 1024GB)
Larger VRAM bandwidth (240.0GB/s vs 128.0GB/s)
832 additional rendering cores
Radeon HD 6850 's Advantages
Lower TDP (127W vs 200W)
Score
Benchmark
FP32 (float)
Radeon R9 280
+124%
3344
Radeon HD 6850
1488
3DMark Time Spy
Radeon R9 280
2009
Radeon HD 6850
+138%
4799
Graphics Card
Mar 2014
Release Date
Oct 2010
Volcanic Islands
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
827 MHz
Base Clock
-
933 MHz
Boost Clock
-
1250 MHz
Memory Clock
1000 MHz
Memory
3GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
240.0GB/s
Bandwidth
128.0GB/s
Render Config
28
Compute Units
12
1792
Shading Units
960
112
TMUs
48
32
ROPs
32
16 KB (per CU)
L1 Cache
8 KB (per CU)
768 KB
L2 Cache
512 KB
Theoretical Performance
29.86 GPixel/s
Pixel Rate
24.80 GPixel/s
104.5 GTexel/s
Texture Rate
37.20 GTexel/s
3.344 TFLOPS
FP32 (float)
1488 GFLOPS
836.0 GFLOPS
FP64 (double)
-
Board Design
200W
TDP
127W
550 W
Suggested PSU
300 W
1x DVI
2x HDMI 1.4a
1x DisplayPort 1.2
Outputs
2x DVI
1x HDMI 1.3a
2x mini-DisplayPort 1.1
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin
Graphics Processor
Tahiti
GPU Name
Barts
Tahiti PRO3
(215-0821330)
GPU Variant
Barts PRO
(215-0798006)
GCN 1.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
4.313 billion
Transistors
1.7 billion
352 mm²
Die Size
255 mm²
Graphics Features
12 (11_1)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
1.2
OpenCL
1.2
1.2
Vulkan
N/A
5.1
Shader Model
5.0
