be quiet! Pure Base 501 Airflow Window vs be quiet! Silent Base 601 Window

The two products' specifications row by row. Rows where they differ are marked; a missing value is unknown, never equal.

7 differences
Specificationbe quiet! Pure Base 501 Airflow Windowbe quiet! Silent Base 601 Window
Number of 3.5" baysDiffers23
Supported motherboard form factorsDiffersATX / M- ATX / Mini- ITXE-ATX / ATX / M-ATX / Mini-ITX
Chassis dimensionsDiffers450 x 231 x 449 mm553 x 245 x 484 mm
VolumeDiffers39.2 l65.57 l
Drive baysDiffers2.5 slots (scope of delivery) 5; 3.5 slots (scope of delivery) 23.5 slots (scope of delivery) 3; 2.5 slots (scope of delivery) 6
Front connectionsDiffersUSB 3.2 Gen. 2 Type C 1, USB 3.2 Type A 2USB 3.2 Type A 2, USB 2.0 1, HD Audio I/O Mic
Expansion slotsDiffers77 + 2
TypeSamePCPC
Anti-dust filternot knownYesnot known
Form factornot knownMidi Towernot known
Illuminationnot knownNonot known
Maximum CPU cooler heightnot known17.8 cmnot known
Maximum graphics card lengthnot known36.8 cmnot known
Maximum PSU lengthnot known18 cmnot known
Number of 2.5" baysnot known5not known
Number of expansion slotsnot known7not known
On/off buttonnot knownYesnot known
Product seriesnot knownPure Base 501not known
Side windownot knownYesnot known
Suitable fornot knownGamingnot known
Fan speed controlnot knownnot known3-step, up to 3 fans
Front fans diameters supportednot known120,140 mmnot known
Front fans installednot known1x 140 mmnot known
Front radiator sizes supportednot known120,140,240,280,360 mmnot known
Liquid cooling capabilitynot knownYesnot known
Number of front fans supported (max)not known3not known
Number of rear fans supported (max)not known1not known
Number of top fans supported (max)not known2not known
Rear fans diameters supportednot known120,140 mmnot known
Rear fans installednot known1x 140 mmnot known
Rear radiator sizes supportednot known120,140 mmnot known
Top fans diameters supportednot known120,140 mmnot known
Top radiator sizes supportednot known120,240 mmnot known
Depthnot known450 mmnot known
Heightnot known463 mmnot known
Weightnot known7.2 kgnot known
Widthnot known231 mmnot known
Audio inputnot knownYesnot known
Audio outputnot knownYesnot known
USB 2.0 ports quantitynot knownnot known1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantitynot knownnot known2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantitynot known1not known
Maximum air pressurenot known0.96 mmH2Onot known
Maximum airflownot known57.4 cfmnot known
Pulse-width modulation (PWM) supportnot knownYesnot known
Power supply includednot knownNonot known
Supported power supply form factorsnot knownATX, PS2not known
Materialnot knownAcrylonitrile butadiene styrene (ABS), Steel, Tempered glassnot known
Reset buttonnot knownYesnot known
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantitynot known2not known
Supported HDD sizesnot known2.5, 3.5"not known
Compliance certificatesnot knownCE, REACH, RoHS, UKCAnot known
Dimension note (metric)not known450 x 231 x 449 mmnot known
Warranty periodnot knownnot known3 years
Design featuresnot knownnot knownNoise dampening vents; extra thick insulation mats
Package depthnot known518 mmnot known
Package heightnot known503 mmnot known
Package weightnot known8.4 kgnot known
Package widthnot known292 mmnot known