Home GPU Comparison AMD Radeon HD 6670 vs AMD Radeon R9 390X

AMD Radeon HD 6670 vs AMD Radeon R9 390X

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6670 and 8GB VRAM Radeon R9 390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6670 's Advantages
Lower TDP (66W vs 275W)
AMD Radeon R9 390X 's Advantages
Released 4 years and 2 months late
More VRAM (8GB vs 1024GB)
Larger VRAM bandwidth (384.0GB/s vs 64.00GB/s)
2336 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon HD 6670
0.768 TFLOPS
Radeon R9 390X +670%
5.914 TFLOPS
VS

Graphics Card

Apr 2011
Release Date
Jun 2015
Northern Islands
Generation
Pirate Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

-
-
-
-
-
-
1000 MHz
Memory Clock
1500 MHz

Memory

1024MB
Memory Size
8GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
512bit
64.00GB/s
Bandwidth
384.0GB/s

Render Config

6
Compute Units
44
-
-
-
480
Shading Units
2816
24
TMUs
176
8
ROPs
64
-
-
-
-
-
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
1024 KB
-
-
-

Theoretical Performance

6.400 GPixel/s
Pixel Rate
67.20 GPixel/s
19.20 GTexel/s
Texture Rate
184.8 GTexel/s
-
-
-
768.0 GFLOPS
FP32 (float)
5.914 TFLOPS
-
FP64 (double)
739.2 GFLOPS

Board Design

66W
TDP
275W
250 W
Suggested PSU
600 W
1x DVI 1x HDMI 1.3a 1x VGA
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
None
Power Connectors
1x 6-pin + 1x 8-pin

Graphics Processor

Turks
GPU Name
Grenada
Turks XT (215-0803000)
GPU Variant
Grenada XT (215-0880004)
TeraScale 2
Architecture
GCN 2.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
0.716 billion
Transistors
6.2 billion
118 mm²
Die Size
438 mm²

Graphics Features

11.2 (11_0)
DirectX
12 (12_0)
4.4
OpenGL
4.6
1.2
OpenCL
2.0
N/A
Vulkan
1.2
-
-
-
5.0
Shader Model
6.3

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