NVIDIA GeForce RTX 4090 D vs AMD Radeon HD 6990M
GPU · Specs Compare
Graphics Card
Release Date
Dec 2023
Jul 2011
Generation
GeForce 40
Vancouver
Type
Desktop
Mobile
Bus Interface
PCIe 4.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
2280 MHz
—
Boost Clock
2520 MHz
—
Memory Clock
1313 MHz
900 MHz
Memory
Memory Size
24GB
2GB
Memory Type
GDDR6X
GDDR5
Memory Bus
384bit
256bit
Bandwidth
1008GB/s
115.2GB/s
Render Config
SM Count
114
—
Shading Units
14592
1120
TMUs
456
56
ROPs
176
32
Tensor Cores
456
—
RT Cores
114
—
L1 Cache
128 KB (per SM)
8 KB (per CU)
L2 Cache
72 MB
512 KB
Compute Units
—
14
Theoretical Performance
Pixel Rate
443.5 GPixel/s
22.88 GPixel/s
Texture Rate
1149 GTexel/s
40.04 GTexel/s
FP16 (half)
73.54 TFLOPS
—
FP32 (float)
73.54 TFLOPS
1.602 TFLOPS
FP64 (double)
1149 GFLOPS
—
Graphics Processor
GPU Name
AD102
Blackcomb
GPU Variant
AD102-250-A1
Blackcomb XTX(216-0811030)
Architecture
Ada Lovelace
TeraScale 2
Foundry
TSMC
TSMC
Process Size
5 nm
40 nm
Transistors
76.3 billion
1.7 billion
Die Size
609 mm²
212 mm²
Board Design
TDP
425W
100W
Suggested PSU
800 W
—
Outputs
1x HDMI 2.13x DisplayPort 1.4a
No outputs
Power Connectors
1x 16-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
3.0
1.2
Vulkan
1.3
N/A
CUDA
8.9
—
Shader Model
6.7
5.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.