We were able to push overclock our Pentium 4 2 GHz (Williamette) to 2.2 GHz which equals a FSB of 110 MHz. That's quite a feat considering that other boards we've tested with this CPU on could only handle around 2.17 GHz. The other motherboards we used were pretty good ones at that.... from the MSI 845 Ultra to the Shuttle AV45GTR for example.

test system specs:
computer hardware:
processor:	intel 2.0ghz pentium 4
clock speed:	2.00ghz
motherboard:	acorp 4d845a
chipset:	intel i845- d
videocard:	msi geforce 3 ti500 (ms-8850)
sound card:	via ac'97 Codec (onboard)
Network Card:	DLink DE-528CT
Memory:	256MB Corsair PC2400 CAS2 DDR
Hard Drive:	Samsung SV6004H 5400RPM UDMA100 60GB
CDROM:	Panasonic 48x CD-ROM CR-594-B
Floppy:	Panasonic 1.44MB Floppy Drive
Heatsink:	AVC Sun Flower
PowerSupply:	Enermax 431Watt
Software Setup	Windows 2000 Pro + SP2 Intel INF's 3.10 DetonatorXP 22.80 DirectX 8.1
Benchmarks	SysMark 2001 Business Winstone 2001 Content Creation 2001 Winbench 99 SiSoft Sandra 2002 Pro 3DMark2001 SE Quake III Arena

BAPCO Sysmark 2001	Source:MadOnion / BAPco

SYSmark2001 uses real world applications concurrently as an accurate way to test the system by following patterns that reflect the way real users work. SYSmark2001's workloads accurately represent today's updated business usage model. The benchmark runs at a realistic execution speed, with think times between application interactions, in order to emulate a desktop user's interaction with the operating system and applications.

Higher numbers denote better performance.

BapCo SysMark 2001 Benchmark Results
	ACorp 4D845A	Sysmarks	Ranking
1.	Internet Content Creation - 100 MHz	208
2	Internet Content Creation - 110 MHz	228
1	Office Productivity - 100 MHz	131
2.	Office Productivity - 110 MHz	164

The ACorp does very well with the Bapco benchmarks. It's performance is on par with other i845D based motherboards, which is good to see coming from a value market solution.

Overclocking a little boosts performance as you might expect with the Internet content creation results increasing about 10% and the office productivity results going up an astonishing 20%!

Winstone 2001	Source: Zdnet

Content Creation Winstone 2001 keeps multiple applications open at once and switches among those applications. Content Creation Winstone 2001's activities focus on what we call "hot spots," periods of activity that make your PC really work--the times where you're likely to see an hourglass or a progress bar.

Business Winstone is a system-level, application-based benchmark that measures a PC's overall performance when running today's Windows-based 32-bit applications on Windows 98 ME, Windows NT 4.0 (SP6 or later), Windows 2000, Windows Me, or Windows XP which runs real applications through a series of scripted activities and uses the time a PC takes to complete those activities to produce its performance scores.

Winstone 2001 Benchmark Results
	ACorp 4D845A	Scores	Ranking
1.	Content Creation - 100 MHz	62.3
1a.	Content Creation - 110 MHz	65.7
2.	Business Winstone - 100 MHz	42.9
2a.	Business Winstone - 110 MHz	45

The 4D845A does as well as other P4 DDR boards here. Unfortunately when dealing with office based applications the computer would be user limited.

Winbench 99 V1.2	Source: e-Testinglabs.com

WinBench 99 is a subsystem-level benchmark that measures the performance of a PC's graphics, disk, and video subsystems in a Windows environment. WinBench 99's tests can run on Windows 95, Windows 98, Windows NT, Windows 2000, and Windows Me systems.

WinBench 99 v1.2 Benchmark Results
	ACorp 4D845A	Score	Ranking
1.	Business Disk - 100 MHz	6240
1a.	Business Disk - 110 MHz	5900
2.	High-End Disk - 100 MHz	17900
2a.	High-End Disk - 110 MHz	16400
3.	Business Graphics - 100 MHz	566
3a.	Business Graphics - 110 MHz	619
4.	High-End Graphics - 100 MHz	897
4a.	High-End Graphics - 110 MHz	1000

Hmm... The problem we had with low Winbench 99 disk scores also happens here with the ACorp 4D845A. It's rather odd since the 801 ICH2 has been around for a while and it is proven.

Sisoft Sandra 2001	Source: Sandra

Sandra is designed to test the theoretical power of a complete system and individual components. The numbers taken though are again, purely theoretical and may not represent real world performance.

SiSoft Sandra 2001 Benchmark Results
	ACorp 4D845A	Score
	Multimedia Benchmark
1.	Integer SSE - 100 MHz	7841 it/s
1a.	Integer SSE - 110 MHz	8643 it/s
2.	Floating-Point SSE - 100 MHz	9558 it/s
2a.	Floating-Point SSE - 110 MHz	10540 it/s
	CPU Benchmark
3.	Dhrystone ALU - 100 MHz	3894 MIPS
3a.	Dhrystone ALU - 110 MHz	4024 MIPs
4.	Whetstone FPU - 100 MHz	1032 FPU/2442 MFLOPS
4a.	Whetstone FPU - 110 MHz	1138 FPU/2660 MFLOPS
	Memory Benchmark
5.	Integer ALU - 100 MHz	2048 MB/s
5a.	Integer ALU - 110 MHz	2259 MB/s
6.	Float FPU - 100 MHz	2043 MB/s
6a.	Float FPU - 110 MHz	2250 MB/s

The 4D845A coupled with our test P4 2 GHz has numbers that are almost identical to the reference CPU's Sandra compares against. The memory scores are lower then RDRAM, however, but they're pretty good for DDR.