AMD Radeon HD 6990 vs NVIDIA GeForce RTX 4090 D
GPU · Specs Compare
Graphics Card
Release Date
Mar 2011
Dec 2023
Generation
Northern Islands
GeForce 40
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 4.0 x16
Clock Speeds
Memory Clock
1250 MHz
1313 MHz
Base Clock
—
2280 MHz
Boost Clock
—
2520 MHz
Memory
Memory Size
2GB
24GB
Memory Type
GDDR5
GDDR6X
Memory Bus
256bit
384bit
Bandwidth
160.0GB/s
1008GB/s
Render Config
Compute Units
24
—
Shading Units
1536
14592
TMUs
96
456
ROPs
32
176
L1 Cache
8 KB (per CU)
128 KB (per SM)
L2 Cache
512 KB
72 MB
SM Count
—
114
Tensor Cores
—
456
RT Cores
—
114
Theoretical Performance
Pixel Rate
26.56 GPixel/s
443.5 GPixel/s
Texture Rate
79.68 GTexel/s
1149 GTexel/s
FP32 (float)
2.550 TFLOPS
73.54 TFLOPS
FP64 (double)
637.4 GFLOPS
1149 GFLOPS
FP16 (half)
—
73.54 TFLOPS
Graphics Processor
GPU Name
Antilles
AD102
GPU Variant
Antilles XT(215-0807027)
AD102-250-A1
Architecture
TeraScale 3
Ada Lovelace
Foundry
TSMC
TSMC
Process Size
40 nm
5 nm
Transistors
2.64 billion
76.3 billion
Die Size
389 mm²
609 mm²
Board Design
TDP
375W
425W
Suggested PSU
750 W
800 W
Outputs
1x DVI4x mini-DisplayPort 1.2
1x HDMI 2.13x DisplayPort 1.4a
Power Connectors
2x 8-pin
1x 16-pin
Graphics Features
DirectX
11.2 (11_0)
12 Ultimate (12_2)
OpenGL
4.4
4.6
OpenCL
1.2
3.0
Vulkan
N/A
1.3
Shader Model
5.0
6.7
CUDA
—
8.9
▲ Specs Compare
Data sourced from official specifications and benchmark tests.