NVIDIA GeForce RTX 5090 Laptop GPU (GB203, 24 GB)
nvidia blackwell (GB203) 2025
Fields
id
accelerators/nvidia-rtx-5090-laptopVendor
nvidia
Architecture
blackwell (GB203)
Release year
2025
Process (nm)
4
Form factors
mobile
VRAM (GB)
24
Memory type
gddr7
Memory bus (bit)
256
Memory bandwidth (GB/s)
896
Bandwidth basis
Notebookcheck spec table, corroborated by VideoCardz: 24 GB GDDR7, 256-bit bus, 28000 MHz effective, bandwidth 896 GB/s. Arithmetic checks: 28 Gbps x 256 / 8 = 896. The llama.cpp discussion #15013 scoreboard row for this GPU prints '24 GB / GDDR7 / 384 bit', which is inconsistent with both sources and with the arithmetic (a 384-bit bus at 28 Gbps would be 1344 GB/s). The 256-bit figure is what is stored.
Peak FLOPS
precisionfp32tflops31.8denseyesvendor_claimnosource_idnotebookcheck-rtx-5090-laptop-specsbasissecondary-aggregatorbasis_detailNotebookcheck prints 'Theoretical Performance 31.8 TFLOPS FP32' for the reference clocks (990-1515 MHz boost). Laptop parts ship at a wide TGP range, so a 175 W unit boosts higher and this number is a floor, not a measured peak.unitTFLOPS
TDP (W)
175
Unified memory
no
Consumer part
yes
notes
MOBILE PART, announced 2025-01-06 (GN22-X11, GB203). 10496 shaders, 24 GB GDDR7, 256-bit, 896 GB/s. TGP is configurable from 95 W to 150 W plus 25 W Dynamic Boost, so 175 W is the top of the range, not what every laptop runs. Same GB203 silicon family as the desktop RTX 5080 and the RTX PRO 4500 Blackwell, with a much lower power cap, so do not borrow tok/s from either. The #15013 scoreboard row's '384 bit' bus is recorded as a reporter error; see memory_bandwidth_basis.
Notes
MOBILE PART, announced 2025-01-06 (GN22-X11, GB203). 10496 shaders, 24 GB GDDR7, 256-bit, 896 GB/s. TGP is configurable from 95 W to 150 W plus 25 W Dynamic Boost, so 175 W is the top of the range, not what every laptop runs. Same GB203 silicon family as the desktop RTX 5080 and the RTX PRO 4500 Blackwell, with a much lower power cap, so do not borrow tok/s from either. The #15013 scoreboard row's '384 bit' bus is recorded as a reporter error; see memory_bandwidth_basis.