ATI Radeon HD 3870 Mac Edition vs Intel Arc A780
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 16GB VRAM Arc A780 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 3870 Mac Edition 's Advantages
Lower TDP (106W vs 200W)
Intel Arc A780 's Advantages
Boost Clock2200MHz
More VRAM (16GB vs 512GB)
Larger VRAM bandwidth (559.6GB/s vs 72.06GB/s)
3776 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 3870 Mac Edition
0.497 TFLOPS
Arc A780
+3525%
18.02 TFLOPS
Graphics Card
Jun 2008
Release Date
Unknown
Radeon R600
Generation
Alchemist(Arc 7)
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
2200 MHz
-
Boost Clock
2200 MHz
1126 MHz
Memory Clock
1093 MHz
Memory
512MB
Memory Size
16GB
GDDR4
Memory Type
GDDR6X
256bit
Memory Bus
256bit
72.06GB/s
Bandwidth
559.6GB/s
Render Config
4
Compute Units
-
-
-
-
320
Shading Units
4096
16
TMUs
256
16
ROPs
128
-
Tensor Cores
512
-
RT Cores
32
-
-
-
256 KB
L2 Cache
16 MB
-
-
-
Theoretical Performance
12.43 GPixel/s
Pixel Rate
281.6 GPixel/s
12.43 GTexel/s
Texture Rate
563.2 GTexel/s
-
FP16 (half)
36.04 TFLOPS
497.3 GFLOPS
FP32 (float)
18.02 TFLOPS
99.46 GFLOPS
FP64 (double)
2.253 TFLOPS
Board Design
106W
TDP
200W
300 W
Suggested PSU
550 W
2x DVI
1x S-Video
Outputs
1x HDMI 2.13x DisplayPort 2.0
1x 6-pin
Power Connectors
2x 8-pin
Graphics Processor
RV670
GPU Name
DG2-512
RV670 XT
(215-0708005)
GPU Variant
ACM-G10
TeraScale
Architecture
Generation 12.7
TSMC
Foundry
TSMC
55 nm
Process Size
6 nm
0.666 billion
Transistors
21.7 billion
192 mm²
Die Size
406 mm²
Graphics Features
10.1 (10_1)
DirectX
12 Ultimate (12_2)
3.3 (full)
4.0 (partial)
OpenGL
4.6
N/A
OpenCL
3.0
N/A
Vulkan
1.3
-
-
-
4.1
Shader Model
6.6
