AMD Radeon 660M 1900MHz vs AMD Radeon RX 7900 XT Full Specs

Summary

384 Shaders 1.9GHz	5,376 Shaders 2.4GHz
Shared Memory102.4GB/s LPDDR5·DDR5	20GB GDDR6800GB/s placeholder
Peak·FP32·FP16 1.46 TFLOPS	Peak·FP32·FP16 51.61 TFLOPS
Form Factor iGPU	Form Factor PCIe Card
TDP Shared	TDP 315W
Power Connectors -	Power Connectors 2x 8-Pin

Highlights

Peak OPS

Peak OPS FP32 FP16 Tensor FP16-16 Tensor FP16-32 FP64 BF16 Tensor BF16 Tensor INT8 Tensor INT4 Memory Bandwidth TDP

Radeon 660M 1900MHz2.92 TFLOPSFP16

x1

Radeon RX 7900 XT206.4 TOPSINT4 Tensor

x70.74

Show Top Score

Theoretical Performance

Clock Speed1900MHz UC·Base·Boost·OC	Clock Speed2400MHz UC·Base·Boost·OC
Peak OPS 2.92 TFLOPSFP16	Peak OPS 206.4 TOPSINT4 Tensor
-	Tensor FP16-16 51.61 TFLOPS Tensor FP16-32 51.61 TFLOPS
-	BF16 103.2 TFLOPS Tensor BF16 51.61 TFLOPS
FP32 1.46 TFLOPS	FP32 51.61 TFLOPS
FP64 91.2 GFLOPS	FP64 1.61 TFLOPS
Tensor INT4 -	Tensor INT4 206.4 TOPS
-	Tensor INT8 51.61 TOPS
Pixel Rate 30.4 GPixel/s	Pixel Rate 460.8 GPixel/s
Texture Rate 45.6 GTexel/s	Texture Rate 806.4 GTexel/s

Core Config

Shaders 384 Shaders	Shaders 5,376 Shaders
TMUs 24 TMUs	TMUs 336 TMUs
ROPs 16 ROPs	ROPs 192 ROPs
Tensor Cores -	Tensor Cores 168 T-Cores
RT Cores 6 RT-Cores	RT Cores 84 RT-Cores
CUs 6 CUs	CUs 84 CUs

Clocks

Base Clock 1.5GHz	Base Clock 1.5GHz
Boost Clock 1.9GHz	Boost Clock 2.4GHz

Cache

L0 Cache 32KB/WGP	L0 Cache 64KB/WGP
L1 256KB/Array	L1 256KB/Array
L2 Cache -	L2 Cache 6MB shared
L3 Cache -	L3 Cache 80MB shared
L3 Bandwidth -	L3 Bandwidth 2.9TB/s

Memory

Shared Memory LPDDR5·DDR5	20GB GDDR6 placeholder
Memory Bus 128-bit	Memory Bus 320-bit
Memory Speed 6.4GT/s	Memory Speed 20GT/s
Memory Bandwidth 102.4GB/s	Memory Bandwidth 800GB/s
ECC No	ECC No

Power & Thermals

TDP Shared

TDP 315W

Video Output

Max Resolution 4096x2160	Max Resolution 7680x4320
Refresh Rate Calculator 3840x2160 Resolution4K UHD Refresh Rate 64Hz	Refresh Rate Calculator 7680x4320 Resolution8K UHD Refresh Rate 165Hz
Multi-Monitor 4	Multi-Monitor 3
Adaptive Sync FreeSync	Adaptive Sync FreeSync
DSC Not Supported	DSC Supported
HDCP HDCP 2.2	HDCP HDCP 2.3

Ports

-	2x DisplayPort 2.1 1x HDMI 2.1 1x USB-C

API Support

Shader Model 6.7	Shader Model 6.7
DirectX DirectX 12 Direct3D 12_2	DirectX DirectX 12 Direct3D 12_2
OpenGL 4.6 OpenCL 2.2 Vulkan 1.3	OpenGL 4.6 OpenCL 2.2 Vulkan 1.3
GFX 10.3	GFX 11

Encoder

Encoder VCN 3.1	Encoder VCN 4.0
Codec - AVC (H.264) HEVC (H.265) -	Codec VP9 AVC (H.264) HEVC (H.265) AV1

Decoder

Decoder VCN 3.1	Decoder VCN 4.0
Codec MPEG-1 MPEG-2 MPEG-4 JPEG VC-1 VP9 AVC (H.264) HEVC (H.265) AV1	Codec MPEG-1 MPEG-2 MPEG-4 JPEG VC-1 VP9 AVC (H.264) HEVC (H.265) AV1

Card

Form Factor iGPU	Form Factor PCIe Card
PCIe -	PCIe PCIe 4.0 x16 2.5-Slots
-	Height 110mm (4.33") Width 276mm (10.87") Depth 51mm (2.01")
Cooling Open-Air -	Cooling Open-Air 3x Fans
Power Connectors -	Power Connectors 2x 8-Pin
Multi-GPU -	Multi-GPU Multi-GPU Support Supported Multi-GPU Type CrossFire XDMA

Chip

Manufacturer AMD	Manufacturer AMD
Chip Designer AMD	Chip Designer AMD
Architecture RDNA 2	Architecture RDNA 3
Family 600	Family Radeon RX 7000
Branding	Branding
Codename Rembrandt	Codename Plum Bonito
Chip Variant -	Chip Variant Navi 31 XL
Market Segment Laptop	Market Segment Desktop
Release Date Jan 4, 2023	Release Date Dec 13, 2022

Fabrication

Foundry TSMC	Foundry TSMC
Other Foundries -	Other Foundries TSMCMCD
Fabrication Node N6 -	Fabrication Node N5 N6MCD
Die Size 210mm² -	Die Size 304mm² 225mm²MCD
Transistor Count 13.1B -	Transistor Count 45.4B 12.3BMCD
Transistor Density 62 MTr/mm² -	Transistor Density 149.2 MTr/mm² 54.67 MTr/mm²MCD

Images