Radeon R9 295X2 vs Radeon HD 7870 GHz Edition
We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 295X2 and 2GB VRAM Radeon HD 7870 GHz Edition 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 1 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (320.0GB/s vs 153.6GB/s)
1536 additional rendering cores
Radeon HD 7870 GHz Edition 's Advantages
Lower TDP (175W vs 500W)
Score
Benchmark
FP32 (float)
Radeon R9 295X2
+123%
5733
Radeon HD 7870 GHz Edition
2560
Graphics Card
Apr 2014
Release Date
Mar 2012
Volcanic Islands
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
1250 MHz
Memory Clock
1200 MHz
Memory
4GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
512bit
Memory Bus
256bit
320.0GB/s
Bandwidth
153.6GB/s
Render Config
44
Compute Units
20
2816
Shading Units
1280
176
TMUs
80
64
ROPs
32
16 KB (per CU)
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
512 KB
Theoretical Performance
65.15 GPixel/s
Pixel Rate
32.00 GPixel/s
179.2 GTexel/s
Texture Rate
80.00 GTexel/s
5.733 TFLOPS
FP32 (float)
2.560 TFLOPS
716.7 GFLOPS
FP64 (double)
160.0 GFLOPS
Board Design
500W
TDP
175W
900 W
Suggested PSU
450 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
2x 8-pin
Power Connectors
2x 6-pin
Graphics Processor
Vesuvius
GPU Name
Pitcairn
Vesuvius XT
(215-0852022)
GPU Variant
Pitcairn XT
(215-0828047)
GCN 2.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
6.2 billion
Transistors
2.8 billion
438 mm²
Die Size
212 mm²
Graphics Features
12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.0
OpenCL
1.2
1.2
Vulkan
1.2
6.3
Shader Model
5.1
