| Product name | Thermaltake View 21 CA-1I3-00M1WN-00 | AZZA Photios 250 CSAZ-250 | APEVIA X-DREAMER4 Series X-DREAMER4-RD |
| Popularity | 80 | 80 | 80 |
| Rating | | | |
| Shopineer score | 78 | 78 | 78 |
| Price | $69.99 |  $60.99 | $60.99 |
| Brand | Thermaltake | AZZA | APEVIA |
| Type | ATX Mid Tower | ATX Mid Tower | ATX Mid Tower |
| Color | Black | Black | Black / Red |
| Case Material | SECC | Steel / Plastic / Tempered Glass | Steel |
| With Power Supply | No | | No |
| Power Supply Mounted | Bottom with Full Length PSU Cover | | Bottom |
| Motherboard Compatibility | Mini-ITX (6.7" x 6.7")Micro ATX (9.6" x 9.6")ATX (12" x 9.6") | ATX / Full ATX / Micro ATX | BABY AT / Micro ATX / ATX |
| Side Panel Window | Dual-Tempered Glass Two-Toned Tinted 4mm Thick Panels | Tempered glass side panel with EVA Anti Vibration PAD | Yes |
| Removable Filter | | | No |
| External 5.25 Drive Bays | | 1 | 4 |
| External 3.5 Drive Bays | | | No |
| Internal 3.5 Drive Bays | 2 | 3 | 4 |
| Internal 2.5 Drive Bays | 2 x 2.5 / 2 x PSU Cover | 5 | 1 |
| Hot-Swap Drive Bays | | | 1 |
| Expansion Slots | 7 | 7 | 7 |
| Front Ports | 2 x USB 3.01 x Headphone, 1 x Mic Ports (TOP) | 3 x USB 2.0 / 1 x USB 3.0 / HD Audio / Mic | 2 x USB 2.0 / 1 x USB 3.0 / Audio |
| Side Air duct | | | |
| Dimensions (H x W x D) | 19.40 x 8.20 x 18.5 | 20.94 x 7.80 x 17.83 | 17.5 x 7.75 x 19.50 |
| Weight | 18.07 lbs. | 13.89 lbs. | 16 lbs. |
| 120mm Fans | Rear (exhaust) : 1 x 120mm Black fan (included)Front: 3 x 120mmTop: 1 x 120mmRear: 1 x 120mmBottom: 1 x 120mm | Front: 1 x 120mm red LED FanRear: 1 x 120mm black Fan | 1 x 120mm Front Fan1 x 120mm Rear Fan2 x 120mm Top Fans |
