Web Server CPU requirements

[you2wire]

I am building a Web server, audio streaming and email server and i did a proformance test and I want to know if a need more.

Projection:
4 sites
expected persons on the site 200
streaming audio 2312 listenering

Results
PassMark(TM) PerformanceTest 6.1 (http://www.passmark.com)
Results generated on: Monday, April 07, 2008

Benchmark Results
Test Name: This Computer
CPU - Integer Math: 180.3
CPU - Floating Point Math: 492.4
CPU - Find Prime Numbers: 512.6
CPU - SSE/3DNow!: 4180.8
CPU - Compression: 4630.1
CPU - Encryption: 28.2
CPU - Image Rotation: 926.8
CPU - String Sorting: 2634.8
Graphics 2D - Lines: 98.7
Graphics 2D - Rectangles: 31.0
Graphics 2D - Shapes: 0.3
Graphics 2D - Fonts and Text: 61.1
Graphics 2D - GUI: 370.5
Memory - Allocate Small Block: 2084.4
Memory - Read Cached: 1628.2
Memory - Read Uncached: 1593.7
Memory - Write: 931.2
Memory - Large RAM: 530.8
Disk - Sequential Read: 21.3
Disk - Sequential Write: 18.3
Disk - Random Seek + RW: 1.7
CPU Mark: 1178.3
2D Graphics Mark: 296.5
Memory Mark: 500.4
Disk Mark: 149.8
PassMark Rating: 479.7
System information: This Computer
CPU Manufacturer: GenuineIntel
Number of CPU: 1
(2 Core(s)/CPU, 1 Logical(s)/Core)
CPU Type: Intel(R) Core(TM)2 CPU 6420 @ 2.13GHz
CPU Speed: 2133.2 MHz
Cache size: 4096KB
O/S: Windows XP (WIN32)
Total RAM: 3070.5 MB.
Available RAM: 2511.3 MB.
Video settings: 1280x1024x16
Video driver:
DESCRIPTION:
MANUFACTURER:
BIOS:
DATE: 11/22/06
Drive Letter: C
Total Disk Space: 74.5 GBytes
Cluster Size: 4.0 KBytes
File system: NTFS

----
Please can you provide your feedback
I was going to update my CPU to one of the following.

1) Intel Core 2 Duo E6850 Processor BX80557E6850 - 3.0GHz, 4MB Cache, 1333MHz FSB, Conroe, Dual-Core, Retail, Socket 775, Processor with Fan Price $299.00
or
2) Intel Core 2 Quad Q9300 Processor BX80580Q9300 - 2.50GHz, 6MB Cache, 1333MHz FSB, Yorkfield, Quad Core, Retail, Socket 775, Processor with Fan Price $309

3)Intel Core 2 Duo E8500 Processor EU80570PJ0876M - 3.16GHz, 6MB Cache, 1333MHz FSB, Wolfdale, Dual-Core, OEM, Socket 775, Processor Price $289.00

Is it worth the upgrade and will it make a difference and if it was work it which one should i go with.
Marvin

[David (PassMark)]

Depending on your caching and free RAM you might find that the disk speed if the bottleneck and not the CPU. But it also depends on bit rates, the efficiency of the software you are using for the streaming and the network protocols. The only real way to know is to build a real system and test it under a simulated load.

[you2wire]

Up grade from Windows XP to Windows Server 2003

PassMark(TM) PerformanceTest 6.1 (http://www.passmark.com)
Results generated on: Friday, April 11, 2008

Benchmark Results
Test Name: This Computer
CPU - Integer Math: 178.5
CPU - Floating Point Math: 492.1
CPU - Find Prime Numbers: 522.9
CPU - SSE/3DNow!: 4201.8
CPU - Compression: 4615.3
CPU - Encryption: 28.1
CPU - Image Rotation: 924.2
CPU - String Sorting: 2537.8
CPU Mark: 1178.2
PassMark Rating: 318.1
System information: This Computer
CPU Manufacturer: GenuineIntel
Number of CPU: 1
(2 Core(s)/CPU, 1 Logical(s)/Core)
CPU Type: Intel(R) Core(TM)2 CPU 6420 @ 2.13GHz
CPU Speed: 2133.5 MHz
Cache size: 4096KB
O/S: Windows Server 2003 (WIN32)
Total RAM: 4094.3 MB.
Available RAM: 3424.0 MB.
Video settings: 1920x1200x16
Video driver:
DESCRIPTION: Standard VGA Graphics Adapter
MANUFACTURER: VGA
BIOS: Chip Rev
DATE: 11/22/06
Drive Letter: F
Total Disk Space: 170.1 GBytes
Cluster Size: 4.0 KBytes
File system: NTFS

Performance has not changed

[David (PassMark)]

Which is as it should be. Switching to Windows 2003 from XP won't make your CPU any faster. (Switching to 64bit will help a bit however if you use native 64bit software).