The Hardware Research 604e/233 was released in early 1998 as a rackmountable Mac clone based on the robust Tsunami logic board architecture. Designed for performance in professional and server environments, this model included a single 233 MHz PowerPC 604e processor, expandable memory, and full Mac OS compatibility up to version 9.0 (unofficially).
Despite being a single-CPU configuration by default, the Hardware Research 604e/233 was built with upgrade potential in mind, allowing users to add a second processor using a daughtercard. Paired with SCSI storage and a 4 MB ATI XCLAIM 3D video card, the unit supported demanding workflows common in video production, research, and publishing.
Hardware Research 604e/233 – Technical Specifications
| Component | Details |
|---|---|
| Model Name | Hardware Research 604e/233 |
| Architecture | Tsunami |
| Form Factor | 19″ Rackmount |
| Processor Type | PowerPC 604e |
| Processor Speed | 233 MHz |
| System Bus Speed | 46.6 MHz |
| Lookaside Bus Speed | 46.6 MHz |
| Level 1 Cache | 64 KB |
| Level 2 Cache | 512 KB |
| FPU | Integrated (PowerPC 604e) |
| ROM Size | 4 MB |
| Data Path | 64-bit |
| RAM Type | 70 ns 168-pin DIMM |
| Standard RAM | 64 MB, 128 MB |
| Maximum RAM | 1040 MB |
| RAM Slots | 8 (supports interleaving) |
| Hard Drive | 3.1 GB SCSI |
| CD-ROM | 24X |
| Floppy Drive | 1.44 MB (manual eject) |
| Video Card | ATI XCLAIM 3D with 4 MB VRAM |
| Maximum VRAM | 8 MB |
| Expansion Slots | 6 PCI |
| Expansion Bays | 1 free external 5.25″ bay |
| Ethernet | AAUI, 10Base-T |
| Modem | Not included |
| Battery | 3.6V Lithium |
| Built-in Display | None |
| Dimensions (HxWxD) | 10 x 17.25 x 17.75 inches |
| Average Weight | 52 lbs |
| Original Price | $4,400 or $4,550 USD |
| Mac OS Compatibility | 7.5.5, 7.6.1, 8.0 to 9.0 (officially up to 8.1) |
Overview and Performance Insights
Engineered for modularity and power, the Hardware Research 604e/233 provided users with plenty of PCI expansion and RAM scalability, along with solid video output through the ATI XCLAIM card. Its robust SCSI architecture delivered dependable disk performance for media-centric applications.
The rackmount form factor made this model particularly appealing to studios and institutional users looking to consolidate power into server racks without compromising compatibility or upgrade flexibility. Even decades later, it’s remembered for its rare blend of Mac OS support and rack-mounted durability.
