Compare Cases

Compare NZXT H2 Flow vs Asus A31 TG Black

  1. Compare
  2. Cases
  3. NZXT H2 Flow 🆚 Asus A31 TG Black
NZXT H2 Flow and Asus A31 TG Black are both cases with the same Front Panel I/O (USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C). The main differences are in Internal 2.5" Drive Bays, Internal 3.5" Drive Bays, Motherboard Compatibility and Dimensions.
Save comparison
NZXT H2 Flow SFF Mini-ITX Black Tempered Glass CI-H21FB-01
NZXT H2 Flow
ASUS A31 Black ATX Mid-Tower Dual-sided tempered glass Frameless Design BTF Hidden Connectors 360 AIO Support
Asus A31 TG Black
Prices
(Change region)
In Stock
Free shipping
$149.99
Out of Stock
$189.14
Prices
(Change region)
In Stock
Free shipping
$64.99
In Stock
Free shipping
$64.99
In Stock
$64.99
Last updated 16 minutes ago.
Show 1 more offers
* Pangoly may earn a commission when you use one of the links to make a purchase. (Disclosure)
* Product prices and availability are subject to change frequently. Any price and availability information displayed on Amazon at the time of purchase will apply.
Brand
NZXT
Brand
Asus
Model
CI-H21FB-01
Model
A31 TG Black
Release Date
📅 February 2026
Release Date
📅 February 2025
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
Price history
View Details ►
Price history
View Details ►
Compatible PC parts
Motherboards ► Graphics Cards ► Power Supplies ► CPU Coolers ►
Compatible PC parts
Motherboards ► Graphics Cards ► Power Supplies ► CPU Coolers ►
Type
Mini ITX Tower
Type
ATX Mid Tower
Color
Black
Color
Black
Includes Power Supply
No
Includes Power Supply
No
External 5.25" Drive Bays
0
External 5.25" Drive Bays
0
External 3.5" Drive Bays
0
External 3.5" Drive Bays
0
Internal 2.5" Drive Bays
2
Internal 2.5" Drive Bays
0
Internal 3.5" Drive Bays
0
Internal 3.5" Drive Bays
2
Motherboard Compatibility
Mini ITX
Motherboard Compatibility
ATX, Micro ATX, Mini ITX
Front Panel I/O
USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C
Front Panel I/O
USB 3.2 Gen 1 Type A, USB 3.2 Gen 2x2 Type C
Dimensions
263 mm x 181 mm x 435 mm
Dimensions
435 mm x 238 mm x 511 mm
Volume
21 L
Volume
53 L
Max VGA length allowance
331 mm
Max VGA length allowance
380 mm
Expansion Slots
3
Expansion Slots
7
Back Connect Support
No
Back Connect Support
Yes
-

Comparison and key differences summary

Reasons to buy the NZXT H2 Flow:

  • Newer Product, it was released around 12 months later
  • +2 internal 2.5" bays

Buy now

Reasons to buy the Asus A31 TG Black:

  • 57% cheaper, you can save $85.00
  • Supports back-connect
  • +2 internal 3.5" bays
  • Additional VGA length allowance (+49.00mm)
  • +4 Expansion slots
  • Supports the following motherboard formats: ATX, Micro ATX
  • Hugely more space available (+61% total case volume)

Buy now

Have you found incorrect information on this page? Contact us and we will fix it as soon as possible.

Trending comparisons (Cases)

Jonsbo JONSPLUS Z20 Black
VS
DeepCool CH160
Jonsbo JONSPLUS Z20 Black

vs

DeepCool CH160
Jonsbo D32 PRO Black
VS
DeepCool CH160
Jonsbo D32 PRO Black

vs

DeepCool CH160
NZXT H3 Flow
VS
Lian Li A3-mATX
NZXT H3 Flow

vs

Lian Li A3-mATX
Lian Li A3-mATX Wood
VS
DeepCool CH160
Lian Li A3-mATX Wood

vs

DeepCool CH160
Jonsbo JONSPLUS Z20 Black
VS
Lian Li A3-mATX
Jonsbo JONSPLUS Z20 Black

vs

Lian Li A3-mATX
Antec Flux M
VS
Phanteks XT M3
Antec Flux M

vs

Phanteks XT M3
Lian Li A3-mATX Wood
VS
Jonsbo D32 PRO Black
Lian Li A3-mATX Wood

vs

Jonsbo D32 PRO Black
Lian Li A4-H20 A4
VS
Fractal Design Terra Graphite
Lian Li A4-H20 A4

vs

Fractal Design Terra Graphite
MONTECH HS01 PRO
VS
Corsair 4000D Airflow
MONTECH HS01 PRO

vs

Corsair 4000D Airflow
CORSAIR iCUE Link 3500X RGB White
VS
Lian Li LANCOOL 217 White
CORSAIR iCUE Link 3500X RGB White

vs

Lian Li LANCOOL 217 White
    News
    Discover how NVIDIA's new RTX Spark superchip challenges Intel x86 and Apple Silicon with 1 Petaflop of local AI power and massive Blackwell graphics.
    NVIDIA RTX Spark: A New Threat to Intel x86 and Apple Chips
    Browse PC Parts
    Spotlight
    $550
    F5-6800J3445G16GX2-RM5RK
    G.SKILL Ripjaws M5 RGB 32GB (2 x 16GB) DDR5 6800
    Trending PC Parts
    x