AMD Radeon RX 7800M vs AMD Radeon R9 285
GPU Specs Compare
Graphics Card
Release Date
Sep 2024
Sep 2014
Generation
Navi Mobile
Volcanic Islands
Type
Mobile
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1295 MHz
-
Boost Clock
2335 MHz
-
Memory Clock
2250 MHz
1375 MHz
Memory
Memory Size
12GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
192bit
256bit
Bandwidth
432.0GB/s
176.0GB/s
Render Config
Compute Units
60
28
Shading Units
3840
1792
TMUs
240
112
ROPs
96
32
RT Cores
60
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
4 MB
512 KB
L3 Cache
48 MB
-
Theoretical Performance
Pixel Rate
224.2 GPixel/s
29.38 GPixel/s
Texture Rate
560.4 GTexel/s
102.8 GTexel/s
FP16 (half)
71.73 TFLOPS
3.290 TFLOPS
FP32 (float)
35.87 TFLOPS
3.290 TFLOPS
FP64 (double)
1121 GFLOPS
205.6 GFLOPS
Graphics Processor
GPU Name
Navi 32
Tonga
GPU Variant
Navi 32 XT(215-180000006)
Tonga PRO(215-0851128)
Architecture
RDNA 3.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
28.1 billion
5 billion
Die Size
346 mm²
366 mm²
Board Design
TDP
180W
190W
Outputs
Portable Device Dependent
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
2x 6-pin
Suggested PSU
-
450 W
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.2
2.1
Vulkan
1.3
1.2.170
Shader Model
6.8
6.5