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ProductNVIDIA DGX SparkApple Mac Studio (M3 Ultra)NVIDIA GeForce RTX 4090DDR5 96GB (2×48GB) desktop kit
TypeComplete systemComplete systemStandalone componentStandalone component
PricePrice not verifiedPrice not verifiedPrice not verifiedPrice not verified
Price source checkedNot verifiedNot verifiedNot verifiedNot verified
ManufacturerNVIDIAAppleNVIDIAVarious (Corsair, G.Skill, Crucial)
Marketplace links0 exact listings · 6 searches0 exact listings · 6 searches0 exact listings · 6 searches0 exact listings · 6 searches
Spec 1Superchip: GB10 Grace BlackwellMemory: Up to 512 GB unifiedMemory: 24 GB GDDR6XCapacity: 96 GB (2×48 GB)
Spec 2Memory: 128 GB unified LPDDR5xChip: M3 UltraInterface: PCIe 4.0 x16Type: DDR5 non-ECC UDIMM
Spec 3Storage: Up to 4 TB NVMeSoftware: MLX, llama.cppTBP: 450 W:
PowerApprox. 240 W external PSU~480 W max450 W, 16-pin connector; 850 W PSU recommended—
HostStandalone desktop; ConnectX-7 for pairing two unitsStandalonePCIe x16 slot; discontinued, mostly used/refurbished stockConsumer DDR5 boards
WarrantyPer NVIDIA/OEM partner1 year (Apple)Varies; often seller warranty on used unitsVaries