drive, costing $9,995. These models conformed to the ARC computer specification (and implemented the associated firmware), but ARC was used by vendors like DeskStation "only as a starting point", with the Evolution models incorporating more traditional PC technologies such as the EISA peripheral bus, on which peripherals and the main system RAM would reside. The CPUs employed by the range were the 50 MHz R4000PC and R4400PC variants, clocked internally at 100 MHz, but only offering on-chip primary cache memory and not built-in support for secondary cache memory. Consequently, DeskStation provided a custom chipset to support the secondary cache and the necessary interfacing to the EISA bus chipset. In late 1993, DeskStation announced a new chipset called LogiCore and a new range of Windows NT workstations with the Tyne branding, integrating MIPS-based CPUs with ISA and VESA technologies. The entry-level Tyne V4600 employed the R4600 CPU clocked at 100 MHz and was fitted with 16 MB of RAM, expandable to 256 MB, a 240 MB hard drive, offering VGA graphics and costing $2,995. It was complemented by two higher-end models, the V4433 and V4450 offering 133 MHz and 150 MHz R4400 CPUs respectively. These models were fitted with 32 MB of RAM, incorporated SCSI-2 peripherals including a 500 MB hard drive and a CD-ROM drive, supported SuperVGA graphics, and were bundled with a 17-inch monitor. Pricing was accordingly higher at $9,495 and $10,495 for the respective systems which were to become available in the first quarter of 1994. DeskStation was commissioned by NewTek to produce a hardware rendering accelerator for its Video Toaster and Lightwave 3D products, but this partnership was dissolved with only "a handful" of units delivered to industry customers. This accelerator, known as the Video Toaster Screamer, was specified with four R4400 CPUs and had been announced in late 1993, but following the product's cancellation, DeskStation followed up in 1994 with a cut-down version of the product, known as the Raptor, featuring two R4400 CPUs each with 64 MB of RAM and running "a limited version of Windows NT", this having a total cost of $13,900. An updated version, the Raptor Plus, featuring faster 133 MHz R4600 CPUs each with 128 MB of RAM, cost $16,900. These solutions formed the basis of a complete workstation, the Raptor II, featuring a single 133 MHz R4600 CPU, 32 MB of RAM, 500 MB SCSI hard drive, CD-ROM drive, Ethernet