Radeon R9 295X2 vs Radeon HD 6990
We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 295X2 and 2GB VRAM Radeon HD 6990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon R9 295X2 's Advantages
Released 3 years and 1 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (320.0GB/s vs 160.0GB/s)
1280 additional rendering cores
Radeon HD 6990 's Advantages
Lower TDP (375W vs 500W)
Score
Benchmark
FP32 (float)
Radeon R9 295X2
+124%
5733
Radeon HD 6990
2550
Graphics Card
Apr 2014
Release Date
Mar 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
1250 MHz
Memory
4GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
512bit
Memory Bus
256bit
320.0GB/s
Bandwidth
160.0GB/s
Render Config
44
Compute Units
24
2816
Shading Units
1536
176
TMUs
96
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
26.56 GPixel/s
179.2 GTexel/s
Texture Rate
79.68 GTexel/s
5.733 TFLOPS
FP32 (float)
2.550 TFLOPS
716.7 GFLOPS
FP64 (double)
637.4 GFLOPS
Board Design
500W
TDP
375W
900 W
Suggested PSU
750 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
1x DVI
4x mini-DisplayPort 1.2
2x 8-pin
Power Connectors
2x 8-pin
Graphics Processor
Vesuvius
GPU Name
Antilles
Vesuvius XT
(215-0852022)
GPU Variant
Antilles XT
(215-0807027)
GCN 2.0
Architecture
TeraScale 3
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
6.2 billion
Transistors
2.64 billion
438 mm²
Die Size
389 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
