AMD Radeon R9 M290 vs NVIDIA GeForce GT 640M Mac Full Specs

Summary

1,024 Shaders 975MHz	384 Shaders 625MHz
4GB GDDR5174.7GB/s	512MB GDDR564GB/s
Peak·FP32·FP16 2 TFLOPS	Peak·FP32·FP16 480 GFLOPS
Form Factor Soldered	Form Factor Soldered
TDP 80W	TDP 32W

Theoretical Performance

Clock Speed975MHz UC·Base·Boost·OC	Clock Speed625MHz UC·Boost·OC
Peak OPS 2 TFLOPSFP32	Peak OPS 480 GFLOPSFP32
FP32 2 TFLOPS	FP32 480 GFLOPS
FP64 124.8 GFLOPS	FP64 20 GFLOPS
Pixel Rate 31.2 GPixel/s	Pixel Rate 10 GPixel/s
Texture Rate 62.4 GTexel/s	Texture Rate 20 GTexel/s

Core Config

Shaders 1,024 Shaders	Shaders 384 Shaders
TMUs 64 TMUs	TMUs 32 TMUs
ROPs 32 ROPs	ROPs 16 ROPs
CUs 16 CUs	SMs 2 SMs

Clocks

Base Clock 850MHz	Base Clock -
Boost Clock 975MHz	Boost Clock 625MHz

Cache

L1 16KB/CU	L1 48KB/SM Tex
L2 Cache 512KB shared	L2 Cache 256KB shared

Memory

4GB GDDR5	512MB GDDR5
Memory Bus 256-bit	Memory Bus 128-bit
Memory Speed 5.5GT/s	Memory Speed 4GT/s
Memory Bandwidth 174.7GB/s	Memory Bandwidth 64GB/s
ECC No	ECC No

Power & Thermals

TDP 80W

TDP 32W

Video Output

Max Resolution 4096x2160	Max Resolution 4096x2304
Refresh Rate Calculator 3840x2160 Resolution4K UHD Refresh Rate 64Hz	Refresh Rate Calculator 3840x2160 Resolution4K UHD Refresh Rate 34Hz
Multi-Monitor 3	Multi-Monitor 3
Adaptive Sync -	Adaptive Sync G-Sync FreeSync
DSC Not Supported	DSC Not Supported

API Support

Shader Model 6.5	Shader Model 6.5
DirectX DirectX 12 Direct3D 11_1	DirectX DirectX 12 Direct3D 11_0
OpenGL 4.6 OpenCL 2.1 Vulkan 1.2	OpenGL 4.6 OpenCL 3 Vulkan 1.2
CUDA - GFX 6 PureVideo HD - VDPAU -	CUDA 3 GFX - PureVideo HD VP5 VDPAU Feature Set D

Encoder

Encoder VCE 1.0	Encoder NVENC 1
Codec AVC (H.264)	Codec AVC (H.264)

Decoder

Decoder UVD 4.0	Decoder NVDEC 1
Codec MPEG-1 MPEG-2 MPEG-4 VC-1 AVC (H.264)	Codec MPEG-1 MPEG-2 MPEG-4 VC-1 AVC (H.264)

Card

Form Factor Soldered	Form Factor Soldered
PCIe PCIe 3.0 x16	PCIe PCIe 3.0 x16
Multi-GPU Multi-GPU Support Supported Multi-GPU Type 2-way CrossFireX	Multi-GPU -

Chip

Manufacturer AMD	Manufacturer NVIDIA
Chip Designer AMD	Chip Designer NVIDIA
Architecture GCN 1	Architecture Kepler
Family Radeon R 200	Family GeForce 600
Branding	Branding
Codename Pitcairn	Codename NVE7
Chip Variant Pitcairn Pro	Chip Variant -
Market Segment Laptop	Market Segment Laptop
Release Date May 31, 2014	Release Date Mar 22, 2012

Fabrication

Foundry TSMC	Foundry TSMC
Fabrication Node 28nm	Fabrication Node 28nm
Die Size 212mm²	Die Size 118mm²
Transistor Count 2.8B	Transistor Count 1.3B
Transistor Density 13.21 MTr/mm²	Transistor Density 10.76 MTr/mm²

Images