AMD Radeon R9 290X2 vs AMD Radeon HD 7870 XT
GPU Specs Compare
Graphics Card
Release Date
Jun 2014
Nov 2012
Generation
Volcanic Islands
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1350 MHz
1500 MHz
Base Clock
-
925 MHz
Boost Clock
-
975 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
512bit
256bit
Bandwidth
345.6GB/s
192.0GB/s
Render Config
Compute Units
44
24
Shading Units
2816
1536
TMUs
176
96
ROPs
64
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
1024 KB
512 KB
Theoretical Performance
Pixel Rate
64.00 GPixel/s
31.20 GPixel/s
Texture Rate
176.0 GTexel/s
93.60 GTexel/s
FP32 (float)
5.632 TFLOPS
2.995 TFLOPS
FP64 (double)
704.0 GFLOPS
748.8 GFLOPS
Graphics Processor
GPU Name
Hawaii
Tahiti
GPU Variant
Hawaii XT(215-0852000)
Tahiti LE(215-0821122)
Architecture
GCN 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
6.2 billion
4.313 billion
Die Size
438 mm²
352 mm²
Board Design
TDP
580W
185W
Suggested PSU
950 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
4x 8-pin
2x 6-pin
Graphics Features
DirectX
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.0
1.2
Vulkan
1.2
1.2
Shader Model
6.3
5.1