Radeon RX 550 640SP vs Radeon HD 7870 XT
We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 550 640SP and 2GB VRAM Radeon HD 7870 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 550 640SP Advantages
Released 4 years and 11 months late
Boost Clock has increased by 10% (1071MHz vs 975MHz)
Lower TDP (60W vs 185W)
Radeon HD 7870 XT Advantages
Larger VRAM bandwidth (192.0GB/s vs 96.00GB/s)
896 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon RX 550 640SP
1371
Radeon HD 7870 XT
+118%
2995
Graphics Card
Oct 2017
Release Date
Nov 2012
Polaris
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16
Clock Speeds
1019 MHz
Base Clock
925 MHz
1071 MHz
Boost Clock
975 MHz
1500 MHz
Memory Clock
1500 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
256bit
96.00GB/s
Bandwidth
192.0GB/s
Render Config
10
Compute Units
24
640
Shading Units
1536
40
TMUs
96
16
ROPs
32
16 KB (per CU)
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
512 KB
Theoretical Performance
17.14 GPixel/s
Pixel Rate
31.20 GPixel/s
42.84 GTexel/s
Texture Rate
93.60 GTexel/s
1371 GFLOPS
FP16 (half)
-
1371 GFLOPS
FP32 (float)
2.995 TFLOPS
85.68 GFLOPS
FP64 (double)
748.8 GFLOPS
Board Design
60W
TDP
185W
250 W
Suggested PSU
450 W
1x DVI
1x HDMI 2.0b
1x DisplayPort 1.4a
1x HDMI 2.0b
1x DisplayPort 1.4a
Outputs
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
1x HDMI 1.4a
2x mini-DisplayPort 1.2
None
Power Connectors
2x 6-pin
Graphics Processor
Baffin
GPU Name
Tahiti
Baffin LE
GPU Variant
Tahiti LE
(215-0821122)
(215-0821122)
GCN 4.0
Architecture
GCN 1.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
3 billion
Transistors
4.313 billion
123 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
