NVIDIA L40 vs XFX Radeon RX 6600 XT Speedster MERC 308 Full Specs - HMC

18,176 Shaders 2.49GHz	2,048 Shaders 2.61GHz
48GB GDDR6864GB/s	8GB GDDR6256GB/s
·· 90.52 TFLOPS	·· 10.68 TFLOPS
Form Factor PCIe Card	Form Factor PCIe Card
TDP 300W	TDP 160W
Power Connectors 1x 16-Pin 12VHPWR -	Power Connectors - 1x 8-Pin

L40

L402.9 POPSINT4 Tensor Sparse

x135.63

Radeon RX 6600 XT Speedster MERC 308

Radeon RX 6600 XT Speedster MERC 30821.36 TFLOPSFP16

x1

Clock Speed ···	Clock Speed ···
Peak OPS 2.9 POPSINT4 Tensor Sparse	Peak OPS 21.36 TFLOPSFP16
Tensor FP8-16 724.1 TFLOPS FP8-16 Tensor Sparse 1.45 PFLOPS Tensor FP8-32 362.1 TFLOPS FP8-32 Tensor Sparse 724.1 TFLOPS	-
Tensor FP16-16 362.1 TFLOPS FP16-16 Tensor Sparse 724.1 TFLOPS Tensor FP16-32 181 TFLOPS FP16-32 Tensor Sparse 362.1 TFLOPS	-
BF16 90.52 TFLOPS Tensor BF16 181 TFLOPS BF16 Tensor Sparse 362.1 TFLOPS	-
Tensor TF32 90.52 TFLOPS	Tensor TF32 -
FP32 90.52 TFLOPS	FP32 10.68 TFLOPS
FP64 1.41 TFLOPS	FP64 667.4 GFLOPS
Tensor INT4 1.45 POPS	Tensor INT4 -
Tensor INT8 724.1 TOPS	-
Ray 209.2 TOPS	Ray -
Pixel Rate 478.1 GPixel/s	Pixel Rate 166.9 GPixel/s
Texture Rate 1.41 TTexel/s	Texture Rate 333.7 GTexel/s

Shaders 18,176 Shaders	Shaders 2,048 Shaders
TMUs 568 TMUs	TMUs 128 TMUs
ROPs 192 ROPs	ROPs 64 ROPs
Tensor Cores 568 T-Cores	Tensor Cores -
RT Cores 142 RT-Cores	RT Cores 32 RT-Cores
SMs 142 SMs	CUs 32 CUs

Base Clock 735MHz	Base Clock 2.19GHz
Boost Clock 2.49GHz	Boost Clock 2.61GHz

L0 Cache -	L0 Cache 32KB/WGP
L1 64KB/SM Tex	L1 128KB/Array
L2 Cache 96MB shared	L2 Cache 2MB shared
L3 Cache -	L3 Cache 32MB shared
L3 Bandwidth -	L3 Bandwidth 832GB/s

48GB GDDR6	8GB GDDR6
Memory Bus 384-bit	Memory Bus 128-bit
Memory Speed 18GT/s	Memory Speed 16GT/s
Memory Bandwidth 864GB/s	Memory Bandwidth 256GB/s
ECC No	ECC No

TDP 300W	TDP 160W
Max Temp -	Max Temp 110°C Max

Max Resolution 7680x4320	Max Resolution 7680x4320
Refresh Rate Calculator 7680x4320 Resolution8K UHD Refresh Rate 60Hz	Refresh Rate Calculator 7680x4320 Resolution8K UHD Refresh Rate 120Hz
Multi-Monitor 4	Multi-Monitor 4
Adaptive Sync G-Sync FreeSync	Adaptive Sync - FreeSync
DSC Supported	DSC Supported
HDCP HDCP 2.3	HDCP HDCP 2.3

4x DisplayPort 1.4

-

3x DisplayPort 1.4

1x HDMI 2.1

Shader Model 6.6	Shader Model 6.5
DirectX DirectX 12 Direct3D 12_3	DirectX DirectX 12 Direct3D 12_2
OpenGL 4.6 OpenCL 3 Vulkan 1.3	OpenGL 4.6 OpenCL 2.1 Vulkan 1.2
CUDA 8.9 GFX - PureVideo HD VP12 VDPAU Feature Set L	CUDA - GFX 10.3 PureVideo HD - VDPAU -

Encoder 2x NVENC 8	Encoder VCN 3.0
Codec AVC (H.264) HEVC (H.265) AV1	Codec AVC (H.264) HEVC (H.265) -

Decoder NVDEC 5	Decoder VCN 3.0
Codec MPEG-1 MPEG-2 MPEG-4 - VC-1 VP8 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

Form Factor PCIe Card	Form Factor PCIe Card
PCIe PCIe 4.0 x16 2-Slots	PCIe PCIe 4.0 x8 2.5-Slots
Height 111mm (4.37") Width 267mm (10.51") Depth 40mm (1.57")	Height 114mm (4.49") Width 274mm (10.79") Depth 50mm (1.97")
Cooling Passive -	Cooling Open-Air 3x Fans
Power Connectors 1x 16-Pin 12VHPWR	Power Connectors 1x 8-Pin
Multi-GPU -	Multi-GPU Multi-GPU Support Supported Multi-GPU Type Bridgeless

Manufacturer NVIDIA	Manufacturer XFX
Chip Designer NVIDIA	Chip Designer AMD
Architecture Ada Lovelace	Architecture RDNA 2
Family Server	Family Radeon RX 6000
Branding	Branding
Codename NV182	Codename Dimgrey Cavefish
Chip Variant AD102-200-A1	Chip Variant Navi 23 XL
Market Segment Server	Market Segment Desktop
Release Date Oct 13, 2022	Release Date Aug 11, 2021

Foundry TSMC	Foundry TSMC
Fabrication Node 4N	Fabrication Node N7
Die Size 608mm²	Die Size 237mm²
Transistor Count 76.3B	Transistor Count 11.1B
Transistor Density 125.4 MTr/mm²	Transistor Density 46.67 MTr/mm²