GB10

Reference GPU

Blackwell 2.0 NVIDIA B-Series Desktop LPDDR5X 2025 NVIDIA

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At a Glance

Entry Type: Reference GPU
Architecture: Blackwell 2.0
Series: NVIDIA B-Series
GPU Die: GB20B
Launch Date: 2025-10-15
CUDA Cores: 6,144
TMUs: 384
ROPs: 48
Memory: 128 GB LPDDR5X
Bus Width: 256-bit
TDP/TBP: 140 W
Rec. PSU: 300 W
Interface: PCIe 5.0 x16
Data Confidence: Partial

GPU Specs

Identity
Entry Type	Reference GPU
Official Name	NVIDIA GB10
GPU Codename	GB20B
Architecture	Blackwell 2.0
Launch Date	2025-10-15
Market Segment Notes	Desktop in NVIDIA B-Series
Core Specs
GPU Die	GB20B
Process Node	TSMC 5 nm
CUDA Cores	6144
SM Count	48
TMUs	384
ROPs	48
AI Units / Tensor Cores	384
RT Units / RT Cores	48
Base Clock	1,665 MHz
Boost Clock	2,418 MHz
Pixel Fillrate	116.1 GP/s
Texture Fillrate	928.5 GT/s
FP32 Throughput	29.71 TFLOPS
FP16 Throughput	29.71 TFLOPS
FP64 Throughput	0.46 TFLOPS
Memory
Memory Size	128 GB
Memory Type	LPDDR5X
Memory Bus Width	256-bit
Memory Clock	1,067 MHz
Memory Bandwidth	273.2 GB/s
L2 Cache	50 MB
L1 Cache	250 KB
Board and Display
TDP / TBP	140 W
Recommended PSU	300 W
Power Connectors	None
Interface	PCIe 5.0 x16
Display Outputs	1x HDMI
Slot Width	IGP, 150 mm length, 150 mm width
Card Length	150 mm
Board Partner Model	Reference or OEM specification
Reference Design	NVIDIA reference design
Board Partner Notes	Exact retail board models can differ in cooler, PCB, clocks, display outputs, BIOS behavior, and power connector layout.
Software
CUDA Compute Capability	12.1
OpenCL Support	OpenCL 3.0
Driver Branch Notes	Driver support depends on architecture, operating system, and current NVIDIA driver branch.
Windows Support Notes	Check the current NVIDIA driver branch and OEM support policy for this exact GPU.
Linux Support Notes	Check the current NVIDIA Linux driver branch, distribution packages, and kernel compatibility for this exact GPU.

Overview

GB10 is an NVIDIA GPU entry in the NVIDIA B-Series family. It is listed with Blackwell 2.0 architecture and GB20B silicon.

Key reference data: 6,144 CUDA cores/shaders, 128 GB LPDDR5X memory, 256-bit memory bus, 140 W board power class.

Board-partner cards can vary in cooler, PCB, display outputs, clocks, BIOS behavior, and power connector layout.

Why It Mattered

GB10 is part of the NVIDIA B-Series generation, where modern RTX features, high power density, memory configuration, and board-partner implementations define the card more than the series name alone. Exact tracking helps separate launch, refresh, OEM, and partner variants.

Collector Notes

For archival use, record the exact board-partner SKU, PCB revision, VBIOS, cooler, slot width, memory configuration, power connectors, display outputs, factory clocks, and any regional or OEM markings.

Used-Market Caution

Before buying used, verify the exact model and memory size, stress-test for artifacts, inspect fans and heatsink screws, check warranty transfer, review mining or heavy compute history, and make sure any 12VHPWR or 12V-2x6 power connector seats fully and evenly.

Known Issues

Known issues pending source review.

SourcesPartial

Sources reviewed: 2026-06-20

This entry is still being source-checked.

Specifications are currently based on reference/spec-dump sources. Historical notes require additional source review.

Data confidence and source status

Partial entry. Core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.

Verified: core specifications and historical notes have been reviewed against listed sources.
Partial: core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.
Imported: spec-only imported entry pending editorial source review.
Needs source review: narrative notes are incomplete until reviewed.

Independent reference sources

TechPowerUp GPU SpecsModel-level specification reference for this GPU entryOpen source

Derived datasets and spec dumps

RightNow GPU DatabaseOpen data inventory used for bulk normalization and cross-checking Derived/spec-dump source. Treat as a reference dataset, not independent historical verification.Open source

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Overview

Why It Mattered

Collector Notes

Used-Market Caution

Known Issues

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Independent reference sources

Derived datasets and spec dumps