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GPU Comparison
AMD Radeon HD 6990M Rebrand vs NVIDIA GeForce RTX 4090 Max-Q
AMD Radeon HD 6990M Rebrand vs NVIDIA GeForce RTX 4090 Max-Q
VS
AMD Radeon HD 6990M Rebrand
NVIDIA GeForce RTX 4090 Max-Q
We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6990M Rebrand and 16GB VRAM GeForce RTX 4090 Max Q to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce RTX 4090 Max-Q 's Advantages
Released 11 years and 6 months late
Boost Clock1455MHz
More VRAM (16GB vs 1GB)
Larger VRAM bandwidth (448.0GB/s vs 70.40GB/s)
8928 additional rendering cores
Lower TDP (80W vs 100W)
Score
Benchmark
FP32 (float)
Radeon HD 6990M Rebrand
1.28 TFLOPS
GeForce RTX 4090 Max Q
+2111%
28.31 TFLOPS
Radeon HD 6990M Rebrand
VS
GeForce RTX 4090 Max Q
Graphics Card
Jul 2011
Release Date
Jan 2023
Vancouver
Generation
GeForce 40 Mobile
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
930 MHz
-
Boost Clock
1455 MHz
1100 MHz
Memory Clock
1750 MHz
Memory
1024MB
Memory Size
16GB
GDDR5
Memory Type
GDDR6
128bit
Memory Bus
256bit
70.40GB/s
Bandwidth
448.0GB/s
Render Config
-
SM Count
76
14
Compute Units
-
800
Shading Units
9728
40
TMUs
304
16
ROPs
112
-
Tensor Cores
304
-
RT Cores
76
8 KB (per CU)
L1 Cache
128 KB (per SM)
256 KB
L2 Cache
64 MB
Theoretical Performance
12.80 GPixel/s
Pixel Rate
163.0 GPixel/s
32.00 GTexel/s
Texture Rate
442.3 GTexel/s
-
FP16 (half)
28.31 TFLOPS
1280 GFLOPS
FP32 (float)
28.31 TFLOPS
-
FP64 (double)
442.3 GFLOPS
Graphics Processor
Broadway
GPU Name
AD103
Broadway XTX
GPU Variant
GN21-X11
TeraScale 2
Architecture
Ada Lovelace
TSMC
Foundry
TSMC
40 nm
Process Size
4 nm
1.04 billion
Transistors
45.9 billion
166 mm²
Die Size
379 mm²
Board Design
100W
TDP
80W
-
Suggested PSU
-
No outputs
Outputs
Portable Device Dependent
-
Power Connectors
None
Graphics Features
11.2 (11_0)
DirectX
12 Ultimate (12_2)
4.4
OpenGL
4.6
1.2
OpenCL
3.0
N/A
Vulkan
1.3
-
CUDA
8.9
5.0
Shader Model
6.7
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