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Cooler Master Vertical GPU Card Holder Kit V3 vs Cooler Master MasterBox Q300L Micro-ATX PC Case — Head-to-Head (2026)

Side-by-side comparison. Specs, prices, user ratings, and our verdict.

Cooler Master Vertical GPU Card Holder Kit V3, PCIe 4.0 5.0 Motherboards GPUs RTX 5090 RX 9070 XT, ABS Casing, 165mm Length, Modula Adjustable for E-ATX ATX Micro ATX Case, White

Cooler Master Vertical GPU Card Holder Kit V3, PCIe 4.0 5.0 Motherboards GPUs RTX 5090 RX 9070 XT, ABS Casing, 165mm Length, Modula Adjustable for E-ATX ATX Micro ATX Case, White

$41.87
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vs
Cooler Master MasterBox Q300L Micro-ATX PC Case – Compact mATX Computer Case with Magnetic Dust Filters, Modular Adjustable I/O Panel, Perforated Airflow Design, 1 x 120mm Pre-Installed Fan, Black

Cooler Master MasterBox Q300L Micro-ATX PC Case – Compact mATX Computer Case with Magnetic Dust Filters, Modular Adjustable I/O Panel, Perforated Airflow Design, 1 x 120mm Pre-Installed Fan, Black

$39.99
🛒 Check Price on Amazon

*Price sourced from Amazon.com. Price and availability subject to change.

Spec-by-spec

SpecCooler Master Vertical GPU Card Holder…Cooler Master MasterBox Q300L…
SizeGPU Kit V3 PCI-E 4.0 White—
BrandCooler MasterCooler Master
ColorWhiteBlack
ModelMCA-U000R-WFVK03—
Warranty1 Year—
UnitCount1—
ReleaseDate2023-02-21T00:00:01Z—
ManufacturerCoolermaster—
ItemPartNumberMCA-U000R-WFVK03—
Material—Alloy Steel, Plastic
Case Type—Mini-Tower
Model Name—Q300L
Model Number—MCB-Q300L-KANN-S00
Compatibility—PC

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