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AMD Radeon R5 M255

Graphics Processor
Topaz
Cores
384
TMUs
24
ROPs
8
Memory Size
2 GB
Memory Type
DDR3
Bus Width
128 bit
GPU Chip
GPU
The Radeon R5 M255 was a mobile graphics chip by AMD, launched on October 12th, 2014. Built on the 28 nm process, and based on the Topaz graphics processor, in its Topaz PRO variant, the chip supports DirectX 12. This ensures that all modern games will run on Radeon R5 M255. The Topaz graphics processor is an average sized chip with a die area of 125 mm² and 1,550 million transistors. It features 384 shading units, 24 texture mapping units, and 8 ROPs. AMD has paired 2,048 MB DDR3 memory with the Radeon R5 M255, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 925 MHz, which can be boosted up to 940 MHz, memory is running at 1000 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. Rather it is intended for use in laptop/notebooks and will use the output of the host mobile device. Radeon R5 M255 is connected to the rest of the system using a PCI-Express 3.0 x8 interface.

Graphics Processor

GPU Name
Topaz
GPU Variant
Topaz PRO
(216-0858030)
Architecture
GCN 3.0
Foundry
TSMC
Process Size
28 nm
Transistors
1,550 million
Density
12.4M / mm²
Die Size
125 mm²

Mobile Graphics

Release Date
Oct 12th, 2014
Generation
Gem System
(R5 M200)
Predecessor
Solar System
Successor
Polaris Mobile
Production
End-of-life
Bus Interface
PCIe 3.0 x8

Relative Performance

GeForce 210
16%
GeForce 9400 GT
20%
Radeon HD 4550
25%
Radeon HD 5450
31%
Radeon HD 6450
37%
GeForce GT 520
39%
GeForce GT 220
48%
GeForce GT 430
63%
Radeon HD 5570
64%
Radeon HD 4670
69%
GeForce GT 440
73%
GeForce GT 240
75%
GeForce 9600 GT
86%
Radeon HD 5670
91%
GeForce GT 640
98%
Radeon R5 M255
100%
GeForce 9800 GT
101%
Radeon HD 6670
105%
Radeon HD 4830
108%
Radeon HD 4770
116%
Radeon HD 4850
122%
GeForce GTS 250
125%
GeForce GTS 450
129%
Radeon HD 5750
133%
Radeon HD 7750
152%
Radeon HD 5770
153%
GeForce GTX 260
156%
Radeon HD 4870
158%
Radeon Vega 8
158%
GeForce GTX 550 Ti
160%
GeForce GTX 650
161%
Radeon HD 5830
170%
Radeon HD 6790
179%
Radeon HD 4890
182%
GeForce GTX 460
189%
Radeon RX Vega 11
190%
GeForce GT 1030
192%
GeForce GTX 275
194%
Radeon HD 7770 GHz Edition
195%
GeForce GTX 280
195%
GeForce GTX 465
199%
Radeon HD 6850
208%
GeForce GTX 285
212%
Radeon HD 5850
228%
GeForce GTX 650 Ti
232%
Radeon HD 7790
232%
Radeon RX 550
242%
GeForce GTX 470
242%
Radeon HD 6870
251%
Radeon HD 5870
268%
GeForce GTX 560 Ti
276%
Radeon HD 4870 X2
278%
GeForce GTX 750 Ti
283%
Radeon HD 6950
284%
GeForce GTX 295
294%
GeForce GTX 650 Ti Boost
298%
Radeon HD 7850
300%
GeForce GTX 480
305%
Radeon HD 6970
319%
Radeon R7 265
326%
Radeon RX 460
331%
Radeon R7 370
331%
GeForce GTX 660
332%
GeForce GTX 570
333%
Radeon RX 560
338%
GeForce GTX 950
359%
Radeon HD 7870 GHz Edition
363%
Radeon R9 270X
371%
GeForce GTX 660 Ti
376%
GeForce GTX 580
378%
GeForce GTX 1050
381%
Radeon HD 7950
382%
GeForce GTX 1630
389%
Radeon HD 5970
389%
GeForce GTX 760
400%
GeForce GTX 670
431%
GeForce GTX 960
442%
Radeon R9 380
453%
Radeon R9 285
456%
Radeon HD 7970
460%
GeForce GTX 680
465%
GeForce GTX 1050 Ti
476%
GeForce GTX 770
488%
Radeon HD 6990
500%
Radeon R9 280X
512%
GeForce GTX 590
519%
Radeon HD 7970 GHz Edition
519%
GeForce GTX 780
575%
Arc A380
576%
Radeon RX 6400
584%
GeForce GTX 1650
596%
Radeon RX 470
633%
Radeon R9 290
642%
Radeon RX 570
676%
Radeon R9 390
685%
Radeon R9 290X
688%
GeForce GTX 970
698%
GeForce GTX TITAN
707%
GeForce GTX 780 Ti
716%
Radeon R9 390X
726%
Radeon HD 7990
730%
Radeon RX 480
733%
GeForce GTX 690
739%
GeForce GTX 1060 6 GB
759%
Radeon RX 5500 OEM
770%
Radeon RX 580
779%
Radeon RX 5500 XT
785%
Radeon RX 6500 XT
792%
GeForce GTX 980
795%
GeForce GTX 1650 SUPER
802%
Radeon R9 FURY
805%
Radeon RX 590
841%
Radeon R9 295X2
886%
GeForce GTX 1660
891%
Radeon R9 FURY X
901%
GeForce GTX 980 Ti
916%
GeForce GTX TITAN X
940%
GeForce GTX 1660 SUPER
969%
GeForce GTX 1070
1023%
GeForce GTX 1660 Ti
1023%
GeForce RTX 3050 8 GB
1039%
Radeon RX Vega 56
1089%
GeForce GTX 1070 Ti
1155%
Radeon RX 5600 XT
1172%
Radeon RX Vega 64
1188%
GeForce GTX 1080
1204%
GeForce RTX 2060
1204%
Radeon RX 5700
1254%
Arc A580
1256%
Radeon RX 6600
1309%
GeForce RTX 2060 SUPER
1353%
GeForce RTX 2070
1370%
Radeon RX 5700 XT
1371%
GeForce RTX 3060 12 GB
1398%
Arc A750
1444%
Radeon VII
1452%
TITAN X Pascal
1489%
Radeon RX 6600 XT
1504%
GeForce GTX 1080 Ti
1534%
Arc A770
1549%
GeForce RTX 2070 SUPER
1551%
Radeon RX 6650 XT
1631%
Radeon RX 7600
1649%
GeForce RTX 4060
1657%
GeForce RTX 2080
1668%
Radeon RX 7600 XT
1702%
GeForce RTX 2080 SUPER
1749%
GeForce RTX 3060 Ti
1791%
Radeon RX 6700 XT
1854%
Radeon RX 6750 XT
1968%
GeForce RTX 4060 Ti 8 GB
1990%
GeForce RTX 2080 Ti
2005%
GeForce RTX 3070
2098%
GeForce RTX 3070 Ti
2245%
Radeon RX 7700 XT
2268%
Radeon RX 6800
2312%
GeForce RTX 4070
2562%
Radeon RX 6800 XT
2626%
GeForce RTX 3080
2726%
Radeon RX 7800 XT
2754%
Radeon RX 6900 XT
2830%
GeForce RTX 4070 SUPER
2972%
Radeon RX 7900 GRE
3029%
GeForce RTX 3080 Ti
3054%
Radeon RX 6950 XT
3058%
GeForce RTX 3090
3111%
GeForce RTX 4070 Ti
3190%
GeForce RTX 4070 Ti SUPER
3485%
Radeon RX 7900 XT
3579%
GeForce RTX 3090 Ti
3610%
GeForce RTX 4080
4052%
GeForce RTX 4080 SUPER
4113%
Radeon RX 7900 XTX
4152%
GeForce RTX 4090
5091%
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for 2080 Ti and faster.
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

Base Clock
925 MHz
Boost Clock
940 MHz
Memory Clock
1000 MHz
2 Gbps effective

Memory

Memory Size
2 GB
Memory Type
DDR3
Memory Bus
128 bit
Bandwidth
32.00 GB/s

Render Config

Shading Units
384
TMUs
24
ROPs
8
Compute Units
6
L1 Cache
16 KB (per CU)
L2 Cache
256 KB

Theoretical Performance

Pixel Rate
7.520 GPixel/s
Texture Rate
22.56 GTexel/s
FP16 (half)
721.9 GFLOPS (1:1)
FP32 (float)
721.9 GFLOPS
FP64 (double)
45.12 GFLOPS (1:16)

Board Design

TDP
unknown
Outputs
Portable Device Dependent

Graphics Features

DirectX
12 (12_0)
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2.170
Shader Model
6.5

Topaz GPU Notes

Generation: Volcanic Islands
Desktop Variant: Iceland
Mobile Variant: Meso / Weston / Polaris 24
Graphics/Compute: GFX8 (gfx802)
Display Core Engine: No Support
Unified Video Decoder: No Support
Video Compression Engine: No Support
System DMA: 2.0.0
CLRX: GCN 1.2.0
Nov 18th, 2024 22:25 EST change timezone

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