AMD Radeon HD 7870 XT vs Intel Arc A770
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 16GB VRAM Arc A770 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7870 XT 's Advantages
Lower TDP (185W vs 225W)
Intel Arc A770 's Advantages
Released 9 years and 11 months late
Boost Clock has increased by 146% (2400MHz vs 975MHz)
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (512.0GB/s vs 192.0GB/s)
2560 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 7870 XT
2.995 TFLOPS
Arc A770
+556%
19.66 TFLOPS
3DMark Time Spy
Radeon HD 7870 XT
1773
Arc A770
+664%
13560
3DMark Time Spy Extreme
Radeon HD 7870 XT
352
Arc A770
+1753%
6525
Graphics Card
Nov 2012
Release Date
Oct 2022
Southern Islands
Generation
Alchemist(Arc 7)
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
925 MHz
Base Clock
2100 MHz
975 MHz
Boost Clock
2400 MHz
1500 MHz
Memory Clock
2000 MHz
Memory
2GB
Memory Size
16GB
GDDR5
Memory Type
GDDR6
256bit
Memory Bus
256bit
192.0GB/s
Bandwidth
512.0GB/s
Render Config
24
Compute Units
-
-
-
-
1536
Shading Units
4096
96
TMUs
256
32
ROPs
128
-
Tensor Cores
512
-
RT Cores
32
16 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
16 MB
-
-
-
Theoretical Performance
31.20 GPixel/s
Pixel Rate
307.2 GPixel/s
93.60 GTexel/s
Texture Rate
614.4 GTexel/s
-
FP16 (half)
39.32 TFLOPS
2.995 TFLOPS
FP32 (float)
19.66 TFLOPS
748.8 GFLOPS
FP64 (double)
2.458 TFLOPS
Board Design
185W
TDP
225W
450 W
Suggested PSU
550 W
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
Outputs
1x HDMI 2.13x DisplayPort 2.0
2x 6-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
Tahiti
GPU Name
DG2-512
Tahiti LE
(215-0821122)
GPU Variant
ACM-G10
GCN 1.0
Architecture
Generation 12.7
TSMC
Foundry
TSMC
28 nm
Process Size
6 nm
4.313 billion
Transistors
21.7 billion
352 mm²
Die Size
406 mm²
Graphics Features
12 (11_1)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
1.2
OpenCL
3.0
1.2
Vulkan
1.3
-
-
-
5.1
Shader Model
6.6
