Radeon HD 6990 vs Radeon Pro W6400
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 4GB VRAM Radeon Pro W6400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 6990 's Advantages
Larger VRAM bandwidth (160.0GB/s vs 112.0GB/s)
768 additional rendering cores
Radeon Pro W6400 's Advantages
Released 10 years and 10 months late
Boost Clock2331MHz
More VRAM (4GB vs 2GB)
Lower TDP (50W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 6990
2550
Radeon Pro W6400
+40%
3580
Graphics Card
Mar 2011
Release Date
Jan 2022
Northern Islands
Generation
Radeon Pro
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x4
Clock Speeds
-
Base Clock
2331 MHz
-
Boost Clock
2331 MHz
1250 MHz
Memory Clock
1750 MHz
Memory
2GB
Memory Size
4GB
GDDR5
Memory Type
GDDR6
256bit
Memory Bus
64bit
160.0GB/s
Bandwidth
112.0GB/s
Render Config
24
Compute Units
12
1536
Shading Units
768
96
TMUs
48
32
ROPs
32
-
RT Cores
12
8 KB (per CU)
L1 Cache
128 KB per Array
512 KB
L2 Cache
1024 KB
-
L3 Cache
8 MB
Theoretical Performance
26.56 GPixel/s
Pixel Rate
74.59 GPixel/s
79.68 GTexel/s
Texture Rate
111.9 GTexel/s
-
FP16 (half)
7.161 TFLOPS
2.550 TFLOPS
FP32 (float)
3.580 TFLOPS
637.4 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
Antilles
GPU Name
Navi 24
Antilles XT
(215-0807027)
GPU Variant
Navi 24 XL-W
TeraScale 3
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
40 nm
Process Size
6 nm
2.64 billion
Transistors
5.4 billion
389 mm²
Die Size
107 mm²
Graphics Features
11.2 (11_0)
DirectX
12 Ultimate (12_2)
4.4
OpenGL
4.6
1.2
OpenCL
2.2
N/A
Vulkan
1.3
5.0
Shader Model
6.6
