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AMD Radeon R9 M385

Strato
Graphics Processor
896
Cores
56
TMUs
16
ROPs
4 GB
Memory Size
GDDR5
Memory Type
128 bit
Bus Width
AMD Strato Photo
The Radeon R9 M385 is a graphics card by AMD, launched in May 2015. Built on the 28 nm process, and based on the Strato graphics processor, in its Strato XT variant, the card supports DirectX 12.0. The Strato graphics processor is an average sized chip with a die area of 160 mm² and 2,080 million transistors. It features 896 shading units, 56 texture mapping units and 16 ROPs. AMD has placed 4,096 MB GDDR5 memory on the card, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 900 MHz, which can be boosted up to 1000 MHz, memory is running at 1200 MHz.
Its power draw is not exactly known. This device has no display connectivity, as it is not designed to have monitors connected to it. Radeon R9 M385 is connected to the rest of the system using a PCI-Express 3.0 x16 interface.

Graphics Processor

GPU Name
Strato
GPU Variant
Strato XT
Architecture
GCN 2.0
Foundry
TSMC
Process Size
28 nm
Transistors
2,080 million
Die Size
160 mm²

Graphics Card

Release Date
May 5th, 2015
Generation
Crystal System
(R9 M300)
Production
Active
Bus Interface
PCIe 3.0 x16

Relative Performance

7%
9%
11%
14%
16%
17%
21%
27%
27%
30%
32%
32%
37%
39%
42%
44%
45%
47%
50%
53%
54%
55%
57%
65%
66%
67%
68%
68%
69%
69%
73%
77%
79%
81%
82%
83%
84%
84%
84%
86%
90%
92%
98%
100%
100%
100%
Radeon R9 M385
104%
104%
108%
115%
119%
120%
122%
123%
127%
128%
129%
132%
138%
140%
143%
143%
143%
144%
155%
156%
160%
162%
163%
164%
164%
167%
168%
172%
186%
190%
195%
196%
198%
200%
205%
210%
215%
220%
224%
224%
248%
273%
277%
295%
297%
301%
305%
307%
309%
313%
314%
316%
319%
336%
343%
347%
347%
382%
388%
395%
425%
466%
483%
520%
520%
549%
612%
642%
658%
718%
816%
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
900 MHz
Boost Clock
1000 MHz
Memory Clock
1200 MHz
4800 MHz effective

Memory

Memory Size
4 GB
Memory Type
GDDR5
Memory Bus
128 bit
Bandwidth
76.80 GB/s

Render Config

Shading Units
896
TMUs
56
ROPs
16
Compute Units
14

Theoretical Performance

Pixel Rate
16.00 GPixel/s
Texture Rate
56.00 GTexel/s
FP32 (float) performance
1,792 GFLOPS
FP64 (double) performance
128.0 GFLOPS (1:14)

Board Design

TDP
unknown
Outputs
No outputs

Graphics Features

DirectX
12.0 (12_0)
OpenGL
4.5
OpenCL
2.0
Vulkan
1.1.86
Shader Model
6.0

Card Notes

Specs Unknown

Strato GPU Notes

Chip Variant: Bonaire
Graphics/Compute: GFX7 (gfx704)
Display Core Engine: 8.2
Unified Video Decoder: 4.2
Video Compression Engine: 2.0