AMD Radeon R9 M265X vs NVIDIA GeForce 840A

Table of Contents

Graphics Processor

GPU model Venus GM108
GPU variant Venus PRO
Architecture GCN 1.0 Maxwell
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 1,500 million unknown
Die size 123 mm² unknown

Mobile graphics

Release date Mar 21st, 2014 Mar 17th, 2014
Generation Crystal System (R9 M200) GeForce 800A
Production End-of-life End-of-life
Interface PCIe 3.0 x16 PCIe 3.0 x8
Predecessor Solar System GeForce 700A
Successor Mobility Radeon GeForce 900A

Clocks

Base clock 575 MHz 1029 MHz
Boost clock 625 MHz 1124 MHz
Memory clock 1000 MHz 4 Gbps effective 1001 MHz 2 Gbps effective

Memory Configuration

Memory size 2 GB 2 GB
Memory type GDDR5 DDR3
Memory bus width 128 bit 64 bit
Bandwidth 64.00 GB/s 16.02 GB/s

Render Configuration

Shading units 640 384
TMUs 40 16
ROPs 16 8
Compute units 10
Cache L1 16 KB (per CU) 64 KB (per SMM)
Cache L2 256 KB 1024 KB
SMM count 3

Performance

Pixel rate 10.00 GPixel/s 8.992 GPixel/s
Texture rate 25.00 GTexel/s 17.98 GTexel/s
FP32 (float) performance 800.0 GFLOPS 863.2 GFLOPS
FP64 (double) performance 50.00 GFLOPS (1:16) 26.98 GFLOPS (1:32)

Dimensions & Outputs

TDP unknown 33 W
Outputs No outputs No outputs
Slot width IGP

API Support & Features

DirectX 12 (11_1) 12 (11_0)
OpenGL 4.6 4.6
OpenCL 1.2 3.0
Vulkan 1.2 1.1
Shader model 5.1 5.1
CUDA 5.0

Other Features

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