IBM 325 specifications Key Features, What’s New? Compared to, High-Performance Opteron Processors

Outstanding 32/64-bit price/performance in a rack-dense 1U, 2-way server for HPC applications

	posted a floating-point score that was 41% better than that of the Xeon-based HP DL360 G3
	server, and at a slightly lower cost. The same e325 score was 63% of that posted by the Itanium
	2-based HP rx2600 server, but at one-seventh the cost!
	In short: Compared to the x335, the e325 is faster (faster processor for integer operations, faster
	DDR memory), has greater memory capacity, and it offers the ability to run both 32-bit and
	64-bitapplications concurrently. When running a 64-bit operating system, the e325 breaks
	through the “4GB barrier” for memory addressing imposed by 32-bit processors.
	What’s New? (Compared to the x335)
Key Features
	y AMD Opteron processors with HyperTransport technology, integrated memory controller and
	1MB of L2 processor cache
	y PC2700 333MHz DDR Chipkill ECC memory (vs. PC2100 266MHz DDR Chipkill ECC
	memory for the x335)
	y 12GB memory capacity (vs. 8MB for the x335)
	y Four USB 1.1 ports (2 front, 2 rear)
	y Optional USB floppy drive
	High-Performance Opteron Processors
	The e325 offers a choice of processors:
	y AMD Opteron 240, 242 and 246
	The integrated memory controller and 1MB of L2 cache run at the full processor clock rate, not the
	stepped down rate of the front-side bus (FSB) used in Intel processors. Because of this, the
	Opteron 246’s Hyper Transport Tunnel offers peak throughput of 16.0GB per second vs. only
	6.4GBps for the (1.5GHz) Itanium’s front-side bus (FSB) — up to 250% faster than Itanium 2, and
	a maximum of 4.26GBps for the (3.06GHz) Xeon’s FSB (up to 375% faster than Xeon). Similarly,
	the maximum aggregate peak memory throughput of the Opteron in a 2-way configuration is
	10.6GBps, or up to 250% higher throughput than the peak rate of 4.26GBps provided by the
	533MHz FSB of the Intel Xeon processor used in the x335, and up to 24% more than the 8.5GBps
	of the Itanium 2. I/O performance is equally strong, with the Opteron supporting a peak I/O
	bandwidth of 12.8GBps, or up to 50% more than the Itanium’s 6.4GBps maximum, and up to 400%
	of the 3.2GBps of the Xeon.
	The e325 ships with one processor, upgradable to two.
	DDR Chipkill ECC Memory
	The e325 supports up to 12GB4 of memory in six DIMM sockets. It uses registered PC2700
	double data rate (DDR) two-way interleaved memory (operating at 333MHz) for faster access,
	and incorporates the same renowned IBM Chipkill ECC technology used in more expensive IBM
	servers, for up to 16X better error correction than standard ECC memory.
	Memory must be installed in pairs. It is available in 512MB and 1GB (2GB DIMMs are planned).
	Large Disk Storage Capacity
	The e325 offers a choice of disk storage, supporting up to two internal HDDs:
	Hot-swap SCSI
	y Ultra320, 10,000 RPMs — 36.4, 73.4 or 146.8GB (293.6GB maximum)
	y Ultra320, 15,000 RPMs — 36.4 or 73.4GB (146.8GB)

Fixed IDE (ATA-100)

y7,200 RPM — 40, 60, 80 or 120GB (240GB)

The SCSI drives are hot-swappable, while the IDE drives are not. If the customer needs more storage space, terabyte capacities are possible with external IBM ServeRAID SCSI or IBM FAStT Fibre Channel storage solutions. The Ultra320 SCSI hot-swap drives use the Converged Tray for interchangeability with xSeries systems and FAStT expansion units.

August 11, 2003. Price comparisons using public web prices as of July 28, 2003.

4In a 2-way configuration, using 2GB DIMMs. See the e325 system specifications table for details.

IBM Confidential 2.