AMD Radeon HD 6970 vs AMD Radeon R9 270X

What is the difference between AMD Radeon HD 6970 and AMD Radeon R9 270X. Find out which graphics card has better performance.

Radeon HD 6970

Radeon R9 270X

Graphics Processor (GPU)

Cayman	GPU Name	Curacao
Cayman XT (215-0807007)	Model number	Curacao XT (215-0848004)
TeraScale 3	Architecture	GCN 1.0
TSMC	Foundry	TSMC
40 nm	Process Size	28 nm
2,640 million	Transistors	2,800 million
389 mm²	Die Size	212 mm²

Graphics Card

Dec 14th, 2010	Release Date	Oct 8th, 2013
Northern Islands (HD 6900)	Family	Volcanic Islands (R9 200)
End-of-life	Production	End-of-life
369 USD	Launch Price	199 USD
Evergreen	Predecessor	Sea Islands
PCIe 2.0 x16	Bus Interface	PCIe 3.0 x16

Memory

2 GB	Memory Size	2 GB
GDDR5	Memory Type	GDDR5
256 bit	Memory Bus	256 bit
176.0 GB/s	Bandwidth	179.2 GB/s

Performance

28.16 GPixel/s	Pixel fillrate	33.60 GPixel/s
84.48 GTexel/s	Texture fillrate	84.00 GTexel/s
2.703 TFLOPS	FP32 (float) performance	2.688 TFLOPS
675.8 GFLOPS (1:4)	FP64 (double) performance	168.0 GFLOPS (1:16)

Clock Speeds

1375 MHz
5.5 Gbps effective

Memory Clock

1400 MHz
5.6 Gbps effective

Render Config

1536	Shading Units	1280
96	TMUs	80
32	ROPs	32
24	Compute Units	20
8 KB (per CU)	L1 Cache	16 KB (per CU)
512 KB	L2 Cache	512 KB

Board Design

Dual-slot	Slot Width	Dual-slot
286 mm 11.3 inches	Length	241 mm 9.5 inches
126 mm 5 inches	Width	109 mm 4.3 inches
42 mm 1.7 inches	Height	36 mm 1.4 inches
250 W	Thermal design power (TDP)	180 W
600 W	Suggested PSU	450 W
2x DVI 1x HDMI 2x mini-DisplayPort	Display Connectors	2x DVI 1x HDMI 1x DisplayPort
1x 6-pin + 1x 8-pin	Power Connectors	2x 6-pin
C200-47	Board Number	C631, C632

API support

11.2 (11_0)	DirectX	12 (11_1)
4.4	OpenGL	4.6
1.2	OpenCL	1.2
N/A	Vulkan	1.2
5.0	Shader Model	5.1