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
GPU
Iris Xe MAX Graphics
CORE STATE
DG1
VRAM
4 GB
CLOCK SPEED
1650 MHz
TDP
25 W
BUS WIDTH
128 bit
ARCHITECTURE
Generation 12.1
PROCESS
10 nm
LAUNCH DATE
2020
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7970
Iris Xe MAX Graphics
Core Specs
Shading Units
2,048
768
-62.5%
Shaders
2,048
768
-62.5%
TMUs
128
48
-62.5%
ROPs
32
24
-25.0%
Compute Units
32
—
Execution Units
—
96
Clocks
Base Clock
—
300 MHz
Boost Clock
—
1650 MHz
GPU Clock
925 MHz
—
Memory Clock
1375 MHz
5.5 Gbps effective
2133 MHz
4.3 Gbps effective
Memory
Memory Size
3 GB
4 GB
VRAM (MB)
3,072
4,096
+33.3%
Memory Type
GDDR5
LPDDR4X
Memory Bus
384 bit
128 bit
Bandwidth
264.0 GB/s
68.26 GB/s
Cache
L1 Cache
16 KB (per CU)
—
L2 Cache
768 KB
1024 KB
L3 Cache
—
16 MB
Performance
Pixel Rate
29.60 GPixel/s
39.60 GPixel/s
Texture Rate
118.4 GTexel/s
79.20 GTexel/s
FP32 (TFLOPS)
3.789 TFLOPS
2.534 TFLOPS
FP64 (TFLOPS)
947.2 GFLOPS (1:4)
633.6 GFLOPS (1:4)
FP16 (TFLOPS)
—
5.069 TFLOPS (2:1)
Power
TDP
250 W
25 W
TDP (W)
250
25
-90.0%
Suggested PSU
600 W
200 W
Power Connectors
1x 6-pin + 1x 8-pin
—
Architecture
Architecture
GCN 1.0
Generation 12.1
GPU Name
Tahiti
DG1
Generation
Southern Islands
(HD 7900)
Xe Graphics
Process Size
28 nm
10 nm
Transistors
4,313 million
—
Die Size
352 mm²
95 mm²
Foundry
TSMC
Intel
Density
12.3M / mm²
—
API Support
DirectX
12 (11_1)
12 (12_1)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.4
OpenCL
2.1 (1.2)
3.0
Shader Model
6.5 (5.1)
6.6
Physical
Slot Width
Dual-slot
IGP
Length
275 mm
10.8 inches
—
Height
111 mm
4.4 inches
—
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
No outputs
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x8
Other
Launch Price
549 USD
—
Production
End-of-life
End-of-life
Predecessor
Northern Islands
Graphics
Successor
Sea Islands
Alchemist