GPU Comparison
RADEON
AMD Radeon HD 7970
CORE STATE
Tahiti
VRAM
3 GB
CLOCK SPEED
—
TDP
250 W
BUS WIDTH
384 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2012
VS
RADEON
Radeon R9 M265X
CORE STATE
Venus
VRAM
2 GB
CLOCK SPEED
625 MHz
TDP
—
BUS WIDTH
128 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2014
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7970
R9 M265X
Core Specs
Shading Units
2,048
640
-68.8%
Shaders
2,048
640
-68.8%
TMUs
128
40
-68.8%
ROPs
32
16
-50.0%
Compute Units
32
10
-68.8%
Clocks
Base Clock
—
575 MHz
Boost Clock
—
625 MHz
GPU Clock
925 MHz
—
Memory Clock
1375 MHz
5.5 Gbps effective
1000 MHz
4 Gbps effective
Memory
Memory Size
3 GB
2 GB
VRAM (MB)
3,072
2,048
-33.3%
Memory Type
GDDR5
GDDR5
Memory Bus
384 bit
128 bit
Bandwidth
264.0 GB/s
64.00 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
256 KB
Performance
Pixel Rate
29.60 GPixel/s
10.00 GPixel/s
Texture Rate
118.4 GTexel/s
25.00 GTexel/s
FP32 (TFLOPS)
3.789 TFLOPS
800.0 GFLOPS
FP64 (TFLOPS)
947.2 GFLOPS (1:4)
50.00 GFLOPS (1:16)
Power
TDP
250 W
—
TDP (W)
250
—
Suggested PSU
600 W
—
Power Connectors
1x 6-pin + 1x 8-pin
—
Architecture
Architecture
GCN 1.0
GCN 1.0
GPU Name
Tahiti
Venus
Generation
Southern Islands
(HD 7900)
Gem System
(R9 M200)
Process Size
28 nm
28 nm
Transistors
4,313 million
1,500 million
Die Size
352 mm²
123 mm²
Foundry
TSMC
TSMC
Density
12.3M / mm²
12.2M / mm²
API Support
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.2.170
OpenCL
2.1 (1.2)
2.1 (1.2)
Shader Model
6.5 (5.1)
6.5 (5.1)
Physical
Slot Width
Dual-slot
—
Length
275 mm
10.8 inches
—
Height
111 mm
4.4 inches
—
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
—
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Launch Price
549 USD
—
Production
End-of-life
End-of-life
Predecessor
Northern Islands
Solar System
Successor
Sea Islands
Polaris Mobile