AMD Radeon HD 7990 vs AMD Radeon Pro W6400
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 4GB VRAM Radeon Pro W6400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7990 's Advantages
Larger VRAM bandwidth (288.0GB/s vs 112.0GB/s)
1280 additional rendering cores
AMD Radeon Pro W6400 's Advantages
Released 8 years and 9 months late
Boost Clock has increased by 133% (2331MHz vs 1000MHz)
More VRAM (4GB vs 3GB)
Lower TDP (50W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 7990
+14%
4.096 TFLOPS
Radeon Pro W6400
3.58 TFLOPS
3DMark Time Spy
Radeon HD 7990
2246
Radeon Pro W6400
+60%
3604
3DMark Time Spy Extreme
Radeon HD 7990
999
Radeon Pro W6400
+64%
1644
Graphics Card
Apr 2013
Release Date
Jan 2022
Southern Islands
Generation
Radeon Pro
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 4.0 x4
Clock Speeds
950 MHz
Base Clock
2331 MHz
1000 MHz
Boost Clock
2331 MHz
1500 MHz
Memory Clock
1750 MHz
Memory
3GB
Memory Size
4GB
GDDR5
Memory Type
GDDR6
384bit
Memory Bus
64bit
288.0GB/s
Bandwidth
112.0GB/s
Render Config
32
Compute Units
12
-
-
-
2048
Shading Units
768
128
TMUs
48
32
ROPs
32
-
-
-
-
RT Cores
12
16 KB (per CU)
L1 Cache
128 KB per Array
768 KB
L2 Cache
1024 KB
-
L3 Cache
8 MB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
74.59 GPixel/s
128.0 GTexel/s
Texture Rate
111.9 GTexel/s
-
FP16 (half)
7.161 TFLOPS
4.096 TFLOPS
FP32 (float)
3.580 TFLOPS
1024 GFLOPS
FP64 (double)
223.8 GFLOPS
Board Design
375W
TDP
50W
750 W
Suggested PSU
250 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
2x DisplayPort 1.4a
2x 8-pin
Power Connectors
None
Graphics Processor
Malta
GPU Name
Navi 24
Malta XT
(215-0849026)
GPU Variant
Navi 24 XL-W
GCN 1.0
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
6 nm
4.313 billion
Transistors
5.4 billion
365 mm²
Die Size
107 mm²
Graphics Features
12 (11_1)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
1.2
OpenCL
2.2
1.2
Vulkan
1.3
-
-
-
5.1
Shader Model
6.6
