AMD Radeon HD 6990 vs NVIDIA GeForce RTX 3080
GPU · Specs Compare
Graphics Card
Release Date
Mar 2011
Sep 2020
Generation
Northern Islands
GeForce 30
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 4.0 x16
Clock Speeds
Memory Clock
1250 MHz
1188 MHz
Base Clock
—
1440 MHz
Boost Clock
—
1710 MHz
Memory
Memory Size
2GB
10GB
Memory Type
GDDR5
GDDR6X
Memory Bus
256bit
320bit
Bandwidth
160.0GB/s
760.3GB/s
Render Config
Compute Units
24
—
Shading Units
1536
8704
TMUs
96
272
ROPs
32
96
L1 Cache
8 KB (per CU)
128 KB (per SM)
L2 Cache
512 KB
5 MB
SM Count
—
68
Tensor Cores
—
272
RT Cores
—
68
Theoretical Performance
Pixel Rate
26.56 GPixel/s
164.2 GPixel/s
Texture Rate
79.68 GTexel/s
465.1 GTexel/s
FP32 (float)
2.550 TFLOPS
29.77 TFLOPS
FP64 (double)
637.4 GFLOPS
465.1 GFLOPS
FP16 (half)
—
29.77 TFLOPS
Graphics Processor
GPU Name
Antilles
GA102
GPU Variant
Antilles XT(215-0807027)
GA102-200-KD-A1
Architecture
TeraScale 3
Ampere
Foundry
TSMC
Samsung
Process Size
40 nm
8 nm
Transistors
2.64 billion
28.3 billion
Die Size
389 mm²
628 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 12-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
6.6
CUDA
—
8.6
Benchmark
3DMark Time Spy
—
17,662
3DMark Time Spy Extreme
—
8,879
▲ Specs Compare
Data sourced from official specifications and benchmark tests.