Home GPU Comparison AMD Radeon RX 580 OEM vs AMD Radeon HD 8870 OEM

AMD Radeon RX 580 OEM vs AMD Radeon HD 8870 OEM

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 580 OEM and 2GB VRAM Radeon HD 8870 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 580 OEM 's Advantages
Released 3 years and 5 months late
Boost Clock1266MHz
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (256.0GB/s vs 153.6GB/s)
1024 additional rendering cores
Lower TDP (150W vs 175W)

Score

Benchmark

FP32 (float)
Radeon RX 580 OEM +127%
5.834 TFLOPS
Radeon HD 8870 OEM
2.56 TFLOPS
VS

Graphics Card

Jun 2016
Release Date
Jan 2013
Polaris
Generation
Sea Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

1120 MHz
Base Clock
-
1266 MHz
Boost Clock
-
2000 MHz
Memory Clock
1200 MHz

Memory

8GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
256.0GB/s
Bandwidth
153.6GB/s

Render Config

36
Compute Units
20
-
-
-
2304
Shading Units
1280
144
TMUs
80
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
2 MB
L2 Cache
512 KB
-
-
-

Theoretical Performance

40.51 GPixel/s
Pixel Rate
32.00 GPixel/s
182.3 GTexel/s
Texture Rate
80.00 GTexel/s
5.834 TFLOPS
FP16 (half)
-
5.834 TFLOPS
FP32 (float)
2.560 TFLOPS
364.6 GFLOPS
FP64 (double)
160.0 GFLOPS

Board Design

150W
TDP
175W
450 W
Suggested PSU
450 W
1x HDMI 2.0b 3x DisplayPort 1.4a
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
1x 6-pin
Power Connectors
2x 6-pin

Graphics Processor

Ellesmere
GPU Name
Pitcairn
Polaris 10 XT (215-0876184)
GPU Variant
Pitcairn XT (215-0828047)
GCN 4.0
Architecture
GCN 1.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
5.7 billion
Transistors
2.8 billion
232 mm²
Die Size
212 mm²

Graphics Features

12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.1
OpenCL
1.2
1.2
Vulkan
1.2
-
-
-
6.4
Shader Model
5.1

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