Arc A770 vs Radeon HD 6990
We compared two Desktop platform GPUs: 16GB VRAM Arc A770 and 2GB VRAM Radeon HD 6990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Arc A770 Advantages
Released 11 years and 7 months late
Boost Clock2400MHz
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (512.0GB/s vs 160.0GB/s)
2560 additional rendering cores
Lower TDP (225W vs 375W)
Score
Benchmark
FP32 (float)
Arc A770
+670%
19660
Radeon HD 6990
2550
Graphics Card
Oct 2022
Release Date
Mar 2011
Alchemist(Arc 7)
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
2100 MHz
Base Clock
-
2400 MHz
Boost Clock
-
2000 MHz
Memory Clock
1250 MHz
Memory
16GB
Memory Size
2GB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
256bit
512.0GB/s
Bandwidth
160.0GB/s
Render Config
-
Compute Units
24
4096
Shading Units
1536
256
TMUs
96
128
ROPs
32
512
Tensor Cores
-
32
RT Cores
-
-
L1 Cache
8 KB (per CU)
16 MB
L2 Cache
512 KB
Theoretical Performance
307.2 GPixel/s
Pixel Rate
26.56 GPixel/s
614.4 GTexel/s
Texture Rate
79.68 GTexel/s
39.32 TFLOPS
FP16 (half)
-
19.66 TFLOPS
FP32 (float)
2.550 TFLOPS
2.458 TFLOPS
FP64 (double)
637.4 GFLOPS
Board Design
225W
TDP
375W
550 W
Suggested PSU
750 W
1x HDMI 2.13x DisplayPort 2.0
Outputs
1x DVI
4x mini-DisplayPort 1.2
4x mini-DisplayPort 1.2
1x 6-pin + 1x 8-pin
Power Connectors
2x 8-pin
Graphics Processor
DG2-512
GPU Name
Antilles
ACM-G10
GPU Variant
Antilles XT
(215-0807027)
(215-0807027)
Generation 12.7
Architecture
TeraScale 3
TSMC
Foundry
TSMC
6 nm
Process Size
40 nm
21.7 billion
Transistors
2.64 billion
406 mm²
Die Size
389 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
3.0
OpenCL
1.2
1.3
Vulkan
N/A
6.6
Shader Model
5.0
