Home GPU Comparison AMD Radeon HD 7870 XT vs AMD Radeon R9 380X

AMD Radeon HD 7870 XT vs AMD Radeon R9 380X

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 4GB VRAM Radeon R9 380X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 XT 's Advantages
Boost Clock975MHz
Larger VRAM bandwidth (192.0GB/s vs 182.4GB/s)
Lower TDP (185W vs 190W)
AMD Radeon R9 380X 's Advantages
Released 3 years late
More VRAM (4GB vs 2GB)
512 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon HD 7870 XT
2.995 TFLOPS
Radeon R9 380X +32%
3.973 TFLOPS
VS

Graphics Card

Nov 2012
Release Date
Nov 2015
Southern Islands
Generation
Pirate Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

925 MHz
Base Clock
-
975 MHz
Boost Clock
-
1500 MHz
Memory Clock
1425 MHz

Memory

2GB
Memory Size
4GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
192.0GB/s
Bandwidth
182.4GB/s

Render Config

24
Compute Units
32
-
-
-
1536
Shading Units
2048
96
TMUs
128
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

31.20 GPixel/s
Pixel Rate
31.04 GPixel/s
93.60 GTexel/s
Texture Rate
124.2 GTexel/s
-
FP16 (half)
3.973 TFLOPS
2.995 TFLOPS
FP32 (float)
3.973 TFLOPS
748.8 GFLOPS
FP64 (double)
248.3 GFLOPS

Board Design

185W
TDP
190W
450 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
2x 6-pin
Power Connectors
2x 6-pin

Graphics Processor

Tahiti
GPU Name
Antigua
Tahiti LE (215-0821122)
GPU Variant
Antigua XT (215-0877016)
GCN 1.0
Architecture
GCN 3.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
5 billion
352 mm²
Die Size
366 mm²

Graphics Features

12 (11_1)
DirectX
12 (12_0)
4.6
OpenGL
4.6
1.2
OpenCL
2.0
1.2
Vulkan
1.2
-
-
-
5.1
Shader Model
6.3

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