AMD Radeon R9 380 OEM vs AMD Radeon R9 285

What is the difference between AMD Radeon R9 380 OEM and AMD Radeon R9 285. Find out which graphics card has better performance.

Radeon R9 380 OEM

Radeon R9 380 OEM

Radeon R9 285

Graphics Processor (GPU)

Antigua	GPU Name	Tonga
Antigua PRO (215-0877000)	Model number	Tonga PRO (215-0851128)
GCN 3.0	Architecture	GCN 3.0
TSMC	Foundry	TSMC
28 nm	Process Size	28 nm
5,000 million	Transistors	5,000 million
366 mm²	Die Size	366 mm²

Graphics Card

May 5th, 2015	Release Date	Sep 2nd, 2014
Pirate Islands (R9 300)	Family	Volcanic Islands (R9 200)
Active	Production	End-of-life
Volcanic Islands	Predecessor	Sea Islands
PCIe 3.0 x16	Bus Interface	PCIe 3.0 x16

Memory

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

Performance

29.38 GPixel/s	Pixel fillrate	29.38 GPixel/s
102.8 GTexel/s	Texture fillrate	102.8 GTexel/s
3.290 TFLOPS (1:1)	FP16 (half) performance	3.290 TFLOPS (1:1)
3.290 TFLOPS	FP32 (float) performance	3.290 TFLOPS
205.6 GFLOPS (1:16)	FP64 (double) performance	205.6 GFLOPS (1:16)

Clock Speeds

1375 MHz 5.5 Gbps effective	Memory Clock	1375 MHz 5.5 Gbps effective
918 MHz	GPU Clock	918 MHz

Render Config

1792	Shading Units	1792
112	TMUs	112
32	ROPs	32
28	Compute Units	28
16 KB (per CU)	L1 Cache	16 KB (per CU)
512 KB	L2 Cache	512 KB

Board Design

Dual-slot	Slot Width	Dual-slot
221 mm 8.7 inches	Length	221 mm 8.7 inches
111 mm 4.4 inches	Width	109 mm 4.3 inches
190 W	Thermal design power (TDP)	190 W
450 W	Suggested PSU	450 W
2x DVI 1x HDMI 1x DisplayPort	Display Connectors	2x DVI 1x HDMI 1x DisplayPort
2x 6-pin	Power Connectors	2x 6-pin
C766	Board Number	C766

API support

12 (12_0)	DirectX	12 (12_0)
4.6	OpenGL	4.6
2.0	OpenCL	2.0
1.2	Vulkan	1.2
6.3	Shader Model	6.3