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ArticlesNT Flies at 333 MHz


June 1996 / Reviews / NT Flies at 333 MHz

Depending on your application, Polywell's 333-MHz Alpha workstation can raise Windows NT to new levels.

By Selinda Chiquoine

Sporting the fastest CPU we've ever tested, Polywell's Poly 333P-A should make a great Windows NT workstation. With some NT applications, however, the Poly 333P-A fell behind a Pentium Pro machine running at much lower clock speeds.

Digital Equipment's 333-MHz 21164A Alpha CPU is a 0.35-micron version of the 0.5-micron 21164 with support for 8- and 16-bit loads and stores to improve x86 emulation performance. Later this year, Digital will introduce FX!32, an emulation/translation technology for 32-bit x86 applications, which should increase the number of NT applications you can use on the Alpha platform.

The Poly 33 3P-A's motherboard uses an L3 cache that holds 2 MB of synchronous static RAM (SRAM) on a 128-bit data path. This is besides the 21164A's built-in 96-KB three-way set-associative L2 cache and 16-KB L1 cache. The motherboard contains two 32-bit PCI slots, two 64-bit PCI slots, and three ISA slots (one shared).

Our system had 64 MB of 70-nanosecond parity-checking RAM (Polywell offers up to 1 GB). The 4.3-GB SCSI-3 Quantum Grand Prix hard drive spins at 7200 rpm and connects with a 16-bit connection to QLogic's fast and wide controller (20-MBps throughput). A 4-MB Diamond Multimedia Stealth 64 video card supported our test mode: 1024 by 768 pixels with 24-bit color.

BYTEmark proves that the 333-MHz 21164A Alpha chip has plenty of raw speed. However, Bapco's SYSmark NT, an applications-based test suite, put the Poly 333P-A behind a 200-MHz Pentium Pro Dell Dimension XPS Pro200 by 13 percent, on average. The 21164A's 96-KB L2 cache (compared to the Pentium Pro's 256-KB cache) m ay not be large enough to handle the context switches caused by the Windows NT 3.51 API. (This problem should go away with NT 4.0.)The Poly 333P-A performed remarkably better only with the CAD test, where intense floating-point calculations come into play. Save the Poly 333P-A for 3-D modeling and CAD, or if you want to run OpenVMS or OS/F1, which Polywell also supports.


Product Information


Poly 333P-A.................................$18,500

(333-MHz 21164A, 4.3-GB hard drive, 4X CD-ROM drive, 17-inch monitor)
Polywell Computers, Inc.
South San Francisco, CA
Phone:    (800) 999-1278 or (415) 583-7222
Fax:      (415) 583-1974
E-Mail:   
polywell@ix.netcom.com

Internet: 
http://www.
polywell.com

Circle 1022 on Inquiry Card.

HotBYTEs
 - information on products covered or advertised in BYTE


Ratings

TECHNOLOGY      ****
IMPLEMENTATION  ***
PERFORMANCE     ****

***** Outstanding
**** Very Good
*** Good
** Fair
* Poor




SYSmark NT 1.0 Results

illustration_link (6 Kbytes)


Poly 333P-A

photo_link (35 Kbytes)

Polywell's screamer is loaded to the max with up to 1 GB of RAM and a 4.3-GB hard drive that spins at 7200 rpm.


Selinda Chiquoine is a former BYTE technical editor. You can reach her on the Internet at selinda@bix.com .

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