Intel P965 Express Chipset Overview
						
		
				
		
		
		
	   The Intel P965 Express chipset is Intel's 
mainstream-performance core logic, it supports all Socket 775 processors running 
on a 533/800/1066MHz Front Side Bus. The P965 Express is married to the 
ICH8-series Southbridge which replaces the ICH7.  
 The southbridge used with the Asus P5B Deluxe/WiFi-AP is the ICH8R model 
in particular.   
 Intel has increased its DDR2 memory support to 800 MHz with the P965 Express 
chipset, putting Intel's latest and greatest at par with AMD's Socket AM2 
Athlon64's. Intel calls the new memory controller FMA or 'Fast Memory Access' 
and gives the system a maximum theoretical bandwidth of 12.8GB/s. Below is 
breakdown on the full feature set of the Intel 975 / 965 Express series chipsets, 
including the P965 Express which is used on the Asus P5B Deluxe/WiFi-AP 
motherboard.  
 
  
  
    
      
        
        
          | Intel 975 / 965 / 955 Series Chipset Feature 
            Breakdown |  
        
           | 
          Intel 975X Express | 
          Intel 
            P965 Express | 
          Intel Q965 Express | 
          Intel G965 Express | 
          Intel Q963 Express | 
          Intel 955X Express |  
        
          | CPU | 
          LGA775 Core 2 Duo | 
          LGA775 Core 2 Duo | 
          LGA775 Core 2 Duo | 
          LGA775 Core 2 Duo | 
          LGA775 Core 2 Duo | 
          LGA775 Pentium D |  
        
          | Front Side Bus (FSB) | 
          1066/800 MHz | 
          1066/800/533 MHz | 
          1066/800/533 MHz 2 threads | 
          1066/800/533 MHz | 
          1066/800/533 MHz | 
          1066/800MHz |  
        
          | Intel Flex Memory Technology | 
          Yes | 
          Yes | 
          Yes | 
          Yes | 
          Yes | 
          Yes |  
        
          | Dual Channel Memory Support | 
          DDR2 800/667/533 | 
          DDR2 800/667/533 | 
          DDR2 667/533 | 
          DDR2 667 | 
          DDR2 667 | 
          DDR2 667/533 |  
        
          | Maximum Memory Capacity | 
          8GB | 
          8GB | 
          8GB | 
          8GB | 
          8GB | 
          8GB |  
        
          | Integrated Graphics | 
          - | 
          - | 
          GMA 3000 | 
          GMA 3000 | 
          GMA 3000 | 
          - |  
        
           | 
          PCI Express x16 | 
          2 | 
          1 | 
          1 | 
          1 | 
          1 | 
          1 |  
        
           | 
          PCI Express x1 | 
          4 | 
          4 | 
          4 | 
          4 | 
          4 | 
          4 |  
        
          | Intel Matrix Storage Technology  | 
          Yes | 
          Yes | 
          Yes | 
          Yes | 
          Yes | 
          Yes |  
        
           | 
          SATA/IDE HDD | 
          4/1 | 
          6/0 | 
          6/0 | 
          6/0 | 
          6/0 | 
          4/1 |  
        
           | 
          SATA Speed | 
          3Gb/s | 
          3Gb/s | 
          3Gb/s | 
          3Gb/s | 
          3Gb/s | 
          3Gb/s |  
        
           | 
          RAID | 
          0, 1, 5, 10 (with ICH7R) | 
          0, 1, 5, 10 (with ICH8R) | 
          0, 1, 5, 10 (with ICH8R) | 
          0, 1, 5, 10 (with ICH8R) | 
          0, 1, 5, 10 (with ICH8R) | 
          0, 1, 5, 10 (with ICH7R) |  
        
           | 
          Hard Drive NCQ | 
          - | 
          Yes | 
          Yes | 
          Yes | 
          Yes | 
          - |  
        
          | USB 2.0 Ports | 
          8 | 
          8 | 
          10 | 
          10 | 
          10 | 
          8 |  
        
          | PCI Masters | 
          6 | 
          6 | 
          6 | 
          6 | 
          6 | 
          6 |  
        
          | Audio | 
          High Definition Audio (Azalia) | 
          High Definition Audio (Azalia) | 
          High Definition Audio (Azalia)  | 
          High Definition Audio (Azalia)  | 
          High Definition Audio (Azalia)  | 
          High Definition Audio (Azalia)  |  
        
            | 
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            |    |     Initially Intel's P965 Express chipset only supported a single 
PCI Express x16 videocard, however most current motherboards feature two 
physical PCI Express x16 slots. Given that the ICH8R southbridge has six PCI 
Express lanes, these have been utilized to support the second PCI Express x16 
slot with 4 PCI Express lanes. It's not as ideal as both videocards received the 
full 16 PCI Express lanes each, but it works well enough with conventional 
videocards. The Asus P5B Deluxe/WiFi-AP is one of the Intel P965 Express 
motherboards with two physical PCI Express x16 slots. 
 A dedicated 
2GB/s I/O bus connects the Intel P965 Express Northbridge and ICH8R Southbridge 
together, which might be a little tight if you have many high bandwidth devices 
installed but should be just fine for the average user.   
 The Asus P5B 
Deluxe/WiFi-AP motherboard comes installed with the ICH8R Southbridge which 
includes a ton of goodies. There are six 3GB/s Serial ATA II channels (which 
support RAID modes 0, 1, 5 and 10) as well a 7.1 channel Intel Azalia high 
definition audio, 10 USB 2.0 ports in total (split between headers and the I/O 
slot), six PCI Express x1 lanes, and an integrated Intel Gigabit MAC that runs 
through the PCI Express bus.   
 Noticeably 
lacking from the chipset itself is parallel IDE support. This is forcing many 
motherboard manufacturers to integrate a standalone IDE controller onto their 
motherboards (as has been done here) so consumers have something to plug their 
optical drives into... A block chart of the Intel P965 Express chipset's major 
features is illustrated below.   
  
  
 Luckily parallel IDE technology isn't overly expensive to add to 
a motherboard. While I admit that Intel is the leader in computer technology, the 
notion that it has ceremoniously done away with IDE in one fell swoop seems 
a bit premature. Next up, PCSTATS overclocks the Asus P5B Deluxe/WiFi-AP motherboard! 
 
		
		
			
 
			
			 
			
			
						 
		 
		
		  
		
  
 
		
		
		
		
			
				
		
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