AMD Radeon HD 6990 vs Intel Arc B770
GPU · Specs Compare
Graphics Card
Release Date
Mar 2011
Jan 2026
Generation
Northern Islands
Battlemage
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 4.0 x16
Clock Speeds
Memory Clock
1250 MHz
2000 MHz
Base Clock
—
2100 MHz
Boost Clock
—
2400 MHz
Memory
Memory Size
2GB
16GB
Memory Type
GDDR5
GDDR6
Memory Bus
256bit
256bit
Bandwidth
160.0GB/s
512.0GB/s
Render Config
Compute Units
24
—
Shading Units
1536
4096
TMUs
96
256
ROPs
32
128
L1 Cache
8 KB (per CU)
—
L2 Cache
512 KB
16 MB
RT Cores
—
32
Theoretical Performance
Pixel Rate
26.56 GPixel/s
307.2 GPixel/s
Texture Rate
79.68 GTexel/s
614.4 GTexel/s
FP32 (float)
2.550 TFLOPS
19.66 TFLOPS
FP64 (double)
637.4 GFLOPS
2.458 TFLOPS
FP16 (half)
—
39.32 TFLOPS
Graphics Processor
GPU Name
Antilles
BMG-G31
GPU Variant
Antilles XT(215-0807027)
—
Architecture
TeraScale 3
Xe2-HPG
Foundry
TSMC
TSMC
Process Size
40 nm
5 nm
Transistors
2.64 billion
Unknown
Die Size
389 mm²
Unknown
Board Design
TDP
375W
225W
Suggested PSU
750 W
550 W
Outputs
1x DVI4x mini-DisplayPort 1.2
1x HDMI 2.1a3x DisplayPort 2.1
Power Connectors
2x 8-pin
1x 6-pin + 1x 8-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
1.4
Shader Model
5.0
6.6
▲ Specs Compare
Data sourced from official specifications and benchmark tests.