GeForce GTX 645 OEM

Reference GPU

Kepler GeForce 600 Series Desktop OEM Desktop GDDR5 2013 NVIDIA

Save this GPU, then open another GPU page to compare them side by side.

At a Glance

Entry Type: Reference GPU
Architecture: Kepler
Series: GeForce 600 Series
GPU Die: GK106S
Launch Date: 2013-04-22
CUDA Cores: 576
TMUs: 48
ROPs: 16
Memory: 1 GB GDDR5
Bus Width: 128-bit
TDP/TBP: 65 W
Rec. PSU: 250 W
Interface: PCIe 3.0 x16
Data Confidence: Partial

GPU Specs

Identity
Entry Type	Reference GPU
Official Name	NVIDIA GeForce GTX 645 OEM
GPU Codename	GK106S
Architecture	Kepler
Launch Date	2013-04-22
Market Segment Notes	Desktop, OEM in GeForce 600 Series
Core Specs
GPU Die	GK106S
Chip Variant / Package	BGA-908
Process Node	TSMC 28 nm
Transistor Count	2.54 billion
Die Size	221 mm²
CUDA Cores	576
SM Count	0
TMUs	48
ROPs	16
Base Clock	824 MHz
Boost Clock	824 MHz
Pixel Fillrate	9.888 GP/s
Texture Fillrate	39.55 GT/s
FP32 Throughput	0.95 TFLOPS
FP64 Throughput	0.04 TFLOPS
Memory
Memory Size	1 GB
Memory Type	GDDR5
Memory Bus Width	128-bit
Memory Clock	1,000 MHz
Memory Bandwidth	64 GB/s
L2 Cache	MB
L1 Cache	16 KB
Board and Display
TDP / TBP	65 W
Recommended PSU	250 W
Power Connectors	None
Interface	PCIe 3.0 x16
Display Outputs	1x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
Slot Width	Single-slot, 147 mm length
Card Length	147 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	3.0
Shader Model	5.1
DirectX Support	DirectX 11.0
Vulkan Support	Vulkan 1.2
OpenGL Support	OpenGL 4.6
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

GeForce GTX 645 OEM is an NVIDIA GPU entry in the GeForce 600 Series family. It is listed with Kepler architecture and GK106S silicon.

Key reference data: 576 CUDA cores/shaders, 1 GB GDDR5 memory, 128-bit memory bus, 65 W board power class.

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

Why It Mattered

GeForce GTX 645 OEM is an OEM-focused GeForce 600 Series variant from the Kepler generation around 2013. These cards often differ from retail models in clocks, cooler, power limits, outputs, and firmware, which is why exact identification matters for upgrades, repairs, and used-system checks.

Collector Notes

For archival use, record the OEM system model, board part number, VBIOS, cooler, slot width, memory chips, power connectors, display outputs, bracket type, and any factory power or clock limits.

Used-Market Caution

Before buying used, confirm the card fits the target case and PSU, then check the exact OEM part number, bracket, power connector, outputs, VBIOS, thermal paste and fan condition, and whether retail drivers support the device ID cleanly.

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

Found an incorrect spec, missing source, or variant issue?

Submit a correction

Overview

Why It Mattered

Collector Notes

Used-Market Caution

Known Issues

GeForce 605 OEM

GeForce 610M

GeForce 615 OEM

GeForce 620M

Independent reference sources

Derived datasets and spec dumps