ATI Mobility Radeon HD 4850 X2 vs NVIDIA GeForce GT 745A

Table of Contents

Graphics Processor

GPU model M98 GK107
Architecture TeraScale Kepler
Foundry TSMC TSMC
Manufacturing process 55 nm 28 nm
Number of transistors 956 million 1,270 million
Die size 256 mm² 118 mm²
GPU variant N14P-LP

Mobile graphics

Release date Jan 9th, 2009 Aug 26th, 2013
Generation M9x (Mobility HD 4800) GeForce 700A
Production End-of-life End-of-life
Interface PCIe 2.0 x16 PCIe 3.0 x16
Reviews 2 in our database
Predecessor M8x GeForce 600A
Successor Manhattan GeForce 800A

Clocks

GPU clock 500 MHz
Memory clock 700 MHz 2.8 Gbps effective 900 MHz 1800 Mbps effective
Base clock 837 MHz
Boost clock 915 MHz

Memory Configuration

Memory size 1024 MB 2 GB
Memory type GDDR5 DDR3
Memory bus width 256 bit 128 bit
Bandwidth 89.60 GB/s 28.80 GB/s

Render Configuration

Shading units 800 384
TMUs 40 32
ROPs 16 16
Compute units 10
Cache L1 16 KB (per CU) 16 KB (per SMX)
Cache L2 256 KB 256 KB
SMX count 2

Performance

Pixel rate 8.000 GPixel/s 7.320 GPixel/s
Texture rate 20.00 GTexel/s 29.28 GTexel/s
FP32 (float) performance 800.0 GFLOPS 702.7 GFLOPS
FP64 (double) performance 160.0 GFLOPS (1:5) 29.28 GFLOPS (1:24)

Dimensions & Outputs

TDP unknown 33 W
Outputs No outputs No outputs
Slot width MXM Module

API Support & Features

DirectX 10.1 (10_1) 12 (11_0)
OpenGL 3.3 4.6
OpenCL 1.1 3.0
Vulkan 1.1
Shader model 4.1 5.1
CUDA 3.0

Other Features

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