Radeon R9 295X2 vs Radeon HD 6870 X2
We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 295X2 and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon R9 295X2 's Advantages
Released 2 years and 9 months late
More VRAM (4GB vs 1024GB)
Larger VRAM bandwidth (320.0GB/s vs 134.4GB/s)
1696 additional rendering cores
Radeon HD 6870 X2 's Advantages
Lower TDP (300W vs 500W)
Score
Benchmark
FP32 (float)
Radeon R9 295X2
+184%
5733
Radeon HD 6870 X2
2016
Graphics Card
Apr 2014
Release Date
Jul 2011
Volcanic Islands
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1250 MHz
Memory Clock
1050 MHz
Memory
4GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
512bit
Memory Bus
256bit
320.0GB/s
Bandwidth
134.4GB/s
Render Config
44
Compute Units
14
2816
Shading Units
1120
176
TMUs
56
64
ROPs
32
16 KB (per CU)
L1 Cache
8 KB (per CU)
1024 KB
L2 Cache
512 KB
Theoretical Performance
65.15 GPixel/s
Pixel Rate
28.80 GPixel/s
179.2 GTexel/s
Texture Rate
50.40 GTexel/s
5.733 TFLOPS
FP32 (float)
2.016 TFLOPS
716.7 GFLOPS
FP64 (double)
-
Board Design
500W
TDP
300W
900 W
Suggested PSU
700 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
2x DVI
1x HDMI 1.3a
2x mini-DisplayPort 1.1
2x 8-pin
Power Connectors
-
Graphics Processor
Vesuvius
GPU Name
Barts
Vesuvius XT
(215-0852022)
GPU Variant
Barts XT
(215-0798000)
GCN 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
6.2 billion
Transistors
1.7 billion
438 mm²
Die Size
255 mm²
Graphics Features
12 (12_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.0
OpenCL
1.2
1.2
Vulkan
N/A
6.3
Shader Model
5.0
