Home GPU Comparison AMD Radeon RX 480 vs AMD Radeon HD 7870 XT

AMD Radeon RX 480 vs AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 480 and 2GB VRAM Radeon HD 7870 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 480 's Advantages
Released 3 years and 7 months late
Boost Clock has increased by 30% (1266MHz vs 975MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (256.0GB/s vs 192.0GB/s)
768 additional rendering cores
Lower TDP (150W vs 185W)

Score

Benchmark

FP32 (float)
Radeon RX 480 +94%
5.834 TFLOPS
Radeon HD 7870 XT
2.995 TFLOPS
VS

Graphics Card

Jun 2016
Release Date
Nov 2012
Arctic Islands
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

1120 MHz
Base Clock
925 MHz
1266 MHz
Boost Clock
975 MHz
2000 MHz
Memory Clock
1500 MHz

Memory

8GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
256.0GB/s
Bandwidth
192.0GB/s

Render Config

36
Compute Units
24
-
-
-
2304
Shading Units
1536
144
TMUs
96
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
31.20 GPixel/s
182.3 GTexel/s
Texture Rate
93.60 GTexel/s
5.834 TFLOPS
FP16 (half)
-
5.834 TFLOPS
FP32 (float)
2.995 TFLOPS
364.6 GFLOPS
FP64 (double)
748.8 GFLOPS

Board Design

150W
TDP
185W
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
Tahiti
Polaris 10 XT (215-0876184)
GPU Variant
Tahiti LE (215-0821122)
GCN 4.0
Architecture
GCN 1.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
5.7 billion
Transistors
4.313 billion
232 mm²
Die Size
352 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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