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AMD Radeon HD 8790M

Mars
Graphics Processor
384
Cores
24
TMUs
8
ROPs
2 GB
Memory Size
GDDR5
Memory Type
128 bit
Bus Width
AMD Radeon HD 8790M Photo AMD Mars Photo
The Radeon HD 8790M was a graphics card by AMD, launched in April 2013. Built on the 28 nm process, and based on the Mars graphics processor, in its Mars XTX variant, the card supports DirectX 12.0. The Mars graphics processor is a relatively small chip with a die area of only 77 mm² and 1,040 million transistors. It features 384 shading units, 24 texture mapping units and 8 ROPs. AMD has placed 2,048 MB GDDR5 memory on the card, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 850 MHz, which can be boosted up to 900 MHz, memory is running at 1000 MHz.
Being a mxm module card, the AMD Radeon HD 8790M does not require any additional power connector, its power draw is not exactly known. This device has no display connectivity, as it is not designed to have monitors connected to it.

Graphics Processor

GPU Name
Mars
GPU Variant
Mars XTX
Architecture
GCN 1.0
Foundry
TSMC
Process Size
28 nm
Transistors
1,040 million
Die Size
77 mm²

Graphics Card

Release Date
Apr 1st, 2013
Generation
Solar System
(HD 8700M)
Production
End-of-life
Bus Interface
MXM-A (3.0)

Relative Performance

12%
16%
19%
25%
29%
30%
38%
49%
50%
54%
57%
58%
67%
71%
76%
79%
82%
85%
90%
95%
97%
100%
Radeon HD 8790M
100%
104%
119%
119%
122%
123%
123%
125%
126%
133%
140%
142%
148%
149%
150%
151%
152%
152%
155%
163%
166%
178%
181%
181%
189%
189%
196%
209%
216%
217%
221%
222%
230%
233%
234%
238%
249%
254%
258%
258%
259%
260%
281%
283%
290%
294%
295%
297%
298%
303%
304%
312%
336%
345%
354%
356%
359%
363%
372%
381%
390%
399%
405%
405%
449%
494%
501%
534%
537%
545%
552%
556%
559%
567%
570%
572%
577%
608%
621%
629%
629%
692%
704%
715%
769%
845%
874%
942%
942%
994%
1109%
1163%
1192%
1300%
1479%
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
850 MHz
Boost Clock
900 MHz
Memory Clock
1000 MHz
4000 MHz effective

Memory

Memory Size
2 GB
Memory Type
GDDR5
Memory Bus
128 bit
Bandwidth
64.00 GB/s

Render Config

Shading Units
384
TMUs
24
ROPs
8
Compute Units
6

Theoretical Performance

Pixel Rate
7.200 GPixel/s
Texture Rate
21.60 GTexel/s
FP32 (float) performance
691.2 GFLOPS
FP64 (double) performance
43.20 GFLOPS (1:16)

Board Design

Slot Width
MXM Module
TDP
unknown
Outputs
No outputs
Power Connectors
None
Board Number
C615

Graphics Features

DirectX
12.0 (11_1)
OpenGL
4.5
OpenCL
1.2
Vulkan
1.1.77
Shader Model
5.1

Mars GPU Notes

Chip Variant: Oland
Graphics/Compute: GFX6 (gfx601)
Display Core Engine: 6.4
Unified Video Decoder: 4.0
Video Compression Engine: 1.0