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GPU Comparison
AMD Radeon Pro W6800X vs AMD Radeon HD 6990
AMD Radeon Pro W6800X vs AMD Radeon HD 6990
VS
AMD Radeon Pro W6800X
AMD Radeon HD 6990
We compared two Desktop platform GPUs: 32GB VRAM Radeon Pro W6800X and 2GB VRAM Radeon HD 6990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon Pro W6800X 's Advantages
Released 10 years and 5 months late
Boost Clock2087MHz
More VRAM (32GB vs 2GB)
Larger VRAM bandwidth (512.0GB/s vs 160.0GB/s)
2304 additional rendering cores
Lower TDP (200W vs 375W)
Score
Benchmark
FP32 (float)
Radeon Pro W6800X
+528%
16.03 TFLOPS
Radeon HD 6990
2.55 TFLOPS
Radeon Pro W6800X
VS
Radeon HD 6990
Graphics Card
Aug 2021
Release Date
Mar 2011
Radeon Pro Mac
Generation
Northern Islands
Desktop
Type
Desktop
Apple MPX
Bus Interface
PCIe 2.0 x16
Clock Speeds
1800 MHz
Base Clock
-
2087 MHz
Boost Clock
-
2000 MHz
Memory Clock
1250 MHz
Memory
32GB
Memory Size
2GB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
256bit
512.0GB/s
Bandwidth
160.0GB/s
Render Config
-
SM Count
-
60
Compute Units
24
3840
Shading Units
1536
240
TMUs
96
96
ROPs
32
-
Tensor Cores
-
60
RT Cores
-
128 KB per Array
L1 Cache
8 KB (per CU)
4 MB
L2 Cache
512 KB
Theoretical Performance
200.4 GPixel/s
Pixel Rate
26.56 GPixel/s
500.9 GTexel/s
Texture Rate
79.68 GTexel/s
32.06 TFLOPS
FP16 (half)
-
16.03 TFLOPS
FP32 (float)
2.550 TFLOPS
1002 GFLOPS
FP64 (double)
637.4 GFLOPS
Graphics Processor
Navi 21
GPU Name
Antilles
Navi 21 Pro-XLA
GPU Variant
Antilles XT (215-0807027)
RDNA 2.0
Architecture
TeraScale 3
TSMC
Foundry
TSMC
7 nm
Process Size
40 nm
26.8 billion
Transistors
2.64 billion
520 mm²
Die Size
389 mm²
Board Design
200W
TDP
375W
550 W
Suggested PSU
750 W
1x HDMI 2.1 4x Thunderbolt
Outputs
1x DVI 4x mini-DisplayPort 1.2
Apple MPX
Power Connectors
2x 8-pin
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.3
Vulkan
N/A
-
CUDA
-
6.7
Shader Model
5.0
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