Product comparison · 2 computer cases

HP Z420 600W 90% Efficient Chassis vs Zalman Z9 U3

12specifications compared
9differ
3identical
28known for one product only

Key differences

Form factor
- Z420 600W 90% Efficient Chassis:Mini Tower
- Z9 U3:Midi Tower
Supported motherboard form factors
- Z420 600W 90% Efficient Chassis:ATX
- Z9 U3:ATX, micro ATX
Number of 3.5" bays
- Z420 600W 90% Efficient Chassis:3
- Z9 U3:7
Number of 5.25" bays
- Z420 600W 90% Efficient Chassis:3
- Z9 U3:4
Number of internal 3.5" bays
- Z420 600W 90% Efficient Chassis:3
- Z9 U3:5
Power supply location
- Z420 600W 90% Efficient Chassis:Top
- Z9 U3:Bottom
Width
- Z420 600W 90% Efficient Chassis:177.8 mm
- Z9 U3:207 mm
Depth
- Z420 600W 90% Efficient Chassis:447.6 mm
- Z9 U3:504 mm

Side by side

Differences highlightedShow differences only

Comparison of Z420 600W 90% Efficient Chassis, Z9 U3
40 specifications	A HP Z420 600W 90% Efficient Chassis View product	B Zalman Z9 U3 View product
Design5 differ
Form factorDiffers	Mini Tower	Midi Tower
Type	PC	PC
MaterialKnown for one	Unknown — not stated by the source	Plastic, Steel
Product colour	Black	Black
Supported motherboard form factorsDiffers	ATX	ATX, micro ATX
Number of 3.5" baysDiffers	3	7
Number of 5.25" baysDiffers	3	4
Number of 2.5" baysKnown for one	Unknown — not stated by the source	1
Number of internal 3.5" baysDiffers	3	5
Number of expansion slotsKnown for one	Unknown — not stated by the source	7
Side windowKnown for one	Unknown — not stated by the source	Yes
Reset buttonKnown for one	Unknown — not stated by the source	Yes
LED indicatorsKnown for one	Unknown — not stated by the source	Yes
Number of external 5.25" baysKnown for one	3	Unknown — not stated by the source
Power supply1 differ
Power supply locationDiffers	Top	Bottom
Power supply includedKnown for one	Yes	Unknown — not stated by the source
Power supplyKnown for one	600 W	Unknown — not stated by the source
Ports & interfacesidentical
USB 2.0 ports quantityKnown for one	Unknown — not stated by the source	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	Unknown — not stated by the source	2
Audio inputKnown for one	Unknown — not stated by the source	Yes
Audio outputKnown for one	Unknown — not stated by the source	Yes
Coolingidentical
Front fans installedKnown for one	Unknown — not stated by the source	1x 120 mm
Number of front fans supported (max)Known for one	Unknown — not stated by the source	1
Front fans diameters supportedKnown for one	Unknown — not stated by the source	120,140 mm
Rear fans installedKnown for one	Unknown — not stated by the source	1x 120 mm
Number of rear fans supported (max)Known for one	Unknown — not stated by the source	1
Rear fans diameters supportedKnown for one	Unknown — not stated by the source	120 mm
Top fans installedKnown for one	Unknown — not stated by the source	1x 120 mm
Number of top fans supported (max)Known for one	Unknown — not stated by the source	2
Top fans diameters supportedKnown for one	Unknown — not stated by the source	120,140 mm
Number of bottom fans supported (max)Known for one	Unknown — not stated by the source	1
Bottom fans diameters supportedKnown for one	Unknown — not stated by the source	120,140 mm
Storageidentical
Supported HDD sizes	2.5,3.5"	2.5,3.5"
Weight & dimensions3 differ
WidthDiffers	177.8 mm	207 mm
DepthDiffers	447.6 mm	504 mm
HeightDiffers	445.2 mm	464 mm
WeightKnown for one	Unknown — not stated by the source	7.2 kg
Other featuresidentical
Power supply typeKnown for one	Unknown — not stated by the source	ATX12V
On/off switchKnown for one	Unknown — not stated by the source	Yes
Optional fansKnown for one	Unknown — not stated by the source	2x 120/140mm

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

More computer case comparisons

All computer case comparisons