Home GPU Comparison AMD Radeon HD 7950 vs AMD Radeon RX 550X 640SP

AMD Radeon HD 7950 vs AMD Radeon RX 550X 640SP

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 and 2GB VRAM Radeon RX 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (240.0GB/s vs 96.00GB/s)
1152 additional rendering cores
AMD Radeon RX 550X 640SP 's Advantages
Released 6 years and 3 months late
Boost Clock1071MHz
Lower TDP (60W vs 200W)

Score

Benchmark

FP32 (float)
Radeon HD 7950 +109%
2.867 TFLOPS
Radeon RX 550X 640SP
1.371 TFLOPS
VS

Graphics Card

Jan 2012
Release Date
Apr 2018
Southern Islands
Generation
Polaris
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x8

Clock Speeds

-
Base Clock
1019 MHz
-
Boost Clock
1071 MHz
1250 MHz
Memory Clock
1500 MHz

Memory

3GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
128bit
240.0GB/s
Bandwidth
96.00GB/s

Render Config

28
Compute Units
10
-
-
-
1792
Shading Units
640
112
TMUs
40
32
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
1024 KB
-
-
-

Theoretical Performance

25.60 GPixel/s
Pixel Rate
17.14 GPixel/s
89.60 GTexel/s
Texture Rate
42.84 GTexel/s
-
FP16 (half)
1371 GFLOPS
2.867 TFLOPS
FP32 (float)
1371 GFLOPS
716.8 GFLOPS
FP64 (double)
85.68 GFLOPS

Board Design

200W
TDP
60W
550 W
Suggested PSU
250 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a
2x 6-pin
Power Connectors
None

Graphics Processor

Tahiti
GPU Name
Baffin
Tahiti PRO (215-0821056)
GPU Variant
Baffin LE
GCN 1.0
Architecture
GCN 4.0
TSMC
Foundry
GlobalFoundries
28 nm
Process Size
14 nm
4.313 billion
Transistors
3 billion
352 mm²
Die Size
123 mm²

Graphics Features

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

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