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 Pro W6900X
CORE STATE
Navi 21
VRAM
32 GB
CLOCK SPEED
2171 MHz
TDP
300 W
BUS WIDTH
256 bit
ARCHITECTURE
RDNA 2.0
PROCESS
7 nm
LAUNCH DATE
2021
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_metal
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7970
Pro W6900X
Core Specs
Shading Units
2,048
5,120
+150.0%
Shaders
2,048
5,120
+150.0%
TMUs
128
320
+150.0%
ROPs
32
128
+300.0%
Compute Units
32
80
+150.0%
Clocks
Base Clock
—
1825 MHz
Boost Clock
—
2171 MHz
GPU Clock
925 MHz
—
Memory Clock
1375 MHz
5.5 Gbps effective
2000 MHz
16 Gbps effective
Memory
Memory Size
3 GB
32 GB
VRAM (MB)
3,072
32,768
+966.7%
Memory Type
GDDR5
GDDR6
Memory Bus
384 bit
256 bit
Bandwidth
264.0 GB/s
512.0 GB/s
Cache
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
768 KB
4 MB
L3 Cache
—
128 MB
L0 Cache
—
32 KB per WGP
Performance
Pixel Rate
29.60 GPixel/s
277.9 GPixel/s
Texture Rate
118.4 GTexel/s
694.7 GTexel/s
FP32 (TFLOPS)
3.789 TFLOPS
22.23 TFLOPS
FP64 (TFLOPS)
947.2 GFLOPS (1:4)
1,389.4 GFLOPS (1:16)
FP16 (TFLOPS)
—
44.46 TFLOPS (2:1)
AI/RT
RT Cores
—
80
Power
TDP
250 W
300 W
TDP (W)
250
300
+20.0%
Suggested PSU
600 W
700 W
Power Connectors
1x 6-pin + 1x 8-pin
—
Architecture
Architecture
GCN 1.0
RDNA 2.0
GPU Name
Tahiti
Navi 21
Generation
Southern Islands
(HD 7900)
Radeon Pro Mac
(Navi II Series)
Process Size
28 nm
7 nm
Transistors
4,313 million
26,800 million
Die Size
352 mm²
520 mm²
Foundry
TSMC
TSMC
Density
12.3M / mm²
51.5M / mm²
API Support
DirectX
12 (11_1)
12 Ultimate (12_2)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.4
OpenCL
2.1 (1.2)
2.1
Shader Model
6.5 (5.1)
6.8
Physical
Slot Width
Dual-slot
—
Length
275 mm
10.8 inches
267 mm
10.5 inches
Height
111 mm
4.4 inches
120 mm
4.7 inches
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
1x HDMI 2.14x Thunderbolt
Bus Interface
PCIe 3.0 x16
Apple MPX
Other
Launch Price
549 USD
5,999 USD
Production
End-of-life
End-of-life
Predecessor
Northern Islands
—
Successor
Sea Islands
—