AMD Radeon HD 8870 OEM vs Intel Arc A770
GPU · Specs Compare
Graphics Card
Release Date
Jan 2013
Oct 2022
Generation
Sea Islands
Alchemist(Arc 7)
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Memory Clock
1200 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
153.6GB/s
512.0GB/s
Render Config
Compute Units
20
—
Shading Units
1280
4096
TMUs
80
256
ROPs
32
128
L1 Cache
16 KB (per CU)
—
L2 Cache
512 KB
16 MB
Tensor Cores
—
512
RT Cores
—
32
Theoretical Performance
Pixel Rate
32.00 GPixel/s
307.2 GPixel/s
Texture Rate
80.00 GTexel/s
614.4 GTexel/s
FP32 (float)
2.560 TFLOPS
19.66 TFLOPS
FP64 (double)
160.0 GFLOPS
2.458 TFLOPS
FP16 (half)
—
39.32 TFLOPS
Graphics Processor
GPU Name
Pitcairn
DG2-512
GPU Variant
Pitcairn XT(215-0828047)
ACM-G10
Architecture
GCN 1.0
Generation 12.7
Foundry
TSMC
TSMC
Process Size
28 nm
6 nm
Transistors
2.8 billion
21.7 billion
Die Size
212 mm²
406 mm²
Board Design
TDP
175W
225W
Suggested PSU
450 W
550 W
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
1x HDMI 2.13x DisplayPort 2.0
Power Connectors
2x 6-pin
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 (11_1)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
1.2
3.0
Vulkan
1.2
1.3
Shader Model
5.1
6.6
Benchmark
3DMark Time Spy
—
13,560
3DMark Time Spy Extreme
—
6,525
3DMark Speed Way
—
2,442
Shadow of the Tomb Raider 2160p
—
45
Shadow of the Tomb Raider 1440p
—
80
Shadow of the Tomb Raider 1080p
—
105
Blender
—
2,292
▲ Specs Compare
Data sourced from official specifications and benchmark tests.