AMD Radeon HD 6990 vs NVIDIA GeForce RTX 4080
GPU · Specs Compare
Graphics Card
Release Date
Mar 2011
Sep 2022
Generation
Northern Islands
GeForce 40
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 4.0 x16
Clock Speeds
Memory Clock
1250 MHz
1400 MHz
Base Clock
—
2205 MHz
Boost Clock
—
2505 MHz
Memory
Memory Size
2GB
16GB
Memory Type
GDDR5
GDDR6X
Memory Bus
256bit
256bit
Bandwidth
160.0GB/s
716.8GB/s
Render Config
Compute Units
24
—
Shading Units
1536
9728
TMUs
96
304
ROPs
32
112
L1 Cache
8 KB (per CU)
128 KB (per SM)
L2 Cache
512 KB
64 MB
SM Count
—
76
Tensor Cores
—
304
RT Cores
—
76
Theoretical Performance
Pixel Rate
26.56 GPixel/s
280.6 GPixel/s
Texture Rate
79.68 GTexel/s
761.5 GTexel/s
FP32 (float)
2.550 TFLOPS
48.74 TFLOPS
FP64 (double)
637.4 GFLOPS
761.5 GFLOPS
FP16 (half)
—
48.74 TFLOPS
Graphics Processor
GPU Name
Antilles
AD103
GPU Variant
Antilles XT(215-0807027)
AD103-300-A1
Architecture
TeraScale 3
Ada Lovelace
Foundry
TSMC
TSMC
Process Size
40 nm
5 nm
Transistors
2.64 billion
45.9 billion
Die Size
389 mm²
379 mm²
Board Design
TDP
375W
320W
Suggested PSU
750 W
700 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
Benchmark
3DMark Time Spy
—
28,173
3DMark Time Spy Extreme
—
14,002
▲ Specs Compare
Data sourced from official specifications and benchmark tests.