AMD Radeon R9 270 1024SP vs NVIDIA GeForce GTX 680MX Mac Edition

Table of Contents

Graphics Processor

GPU model Pitcairn GK104
GPU variant Pitcairn PRO (215-0828062) N13E-GTX2-A2
Architecture GCN 1.0 Kepler
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 2,800 million 3,540 million
Die size 212 mm² 294 mm²

Graphics Card

Release date Mar 13th, 2015
Generation Volcanic Islands
Production End-of-life
Interface PCIe 3.0 x16
Reviews 32 in our database
Predecessor Sea Islands
Successor Pirate Islands

Clocks

Base clock 900 MHz
Boost clock 925 MHz
Memory clock 1200 MHz 4.8 Gbps effective 1250 MHz 5 Gbps effective
GPU clock 719 MHz

Memory Configuration

Memory size 2 GB 2 GB
Memory type GDDR5 GDDR5
Memory bus width 256 bit 256 bit
Bandwidth 153.6 GB/s 160.0 GB/s

Render Configuration

Shading units 1024 1536
TMUs 64 128
ROPs 32 32
Compute units 16
Cache L1 16 KB (per CU) 16 KB (per SMX)
Cache L2 512 KB 512 KB
SMX count 8

Performance

Pixel rate 29.60 GPixel/s 23.01 GPixel/s
Texture rate 59.20 GTexel/s 92.03 GTexel/s
FP32 (float) performance 1.894 TFLOPS 2.209 TFLOPS
FP64 (double) performance 118.4 GFLOPS (1:16) 92.03 GFLOPS (1:24)

Dimensions & Outputs

Slot width Dual-slot
TDP 150 W 122 W
Suggested PSU 450 W
Outputs 2x DVI1x HDMI1x DisplayPort No outputs
Power connectors 1x 6-pin
Board number C403

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 3.0

Other Features

Mobile graphics

Release date Oct 23rd, 2012
Generation GeForce 600M
Production End-of-life
Interface PCIe 3.0 x16
Predecessor GeForce 500M
Successor GeForce 700M

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