Asus P5K vs Asus P5K3 Benchmarks (DDR2 vs DDR3)

Introduction & Specification


Just over a month ago Overclock3D had the opportunity to review one of Asus's first Intel P35 based motherboards. Despite the P35's native support for DDR3, the Asus P5K had been designed to satisfy the needs of people who wanted to move to Intel's latest 45nm chips while remaining on the DDR2 platform.

However, at the very same time Asus also released the P5K3. Essentially the same motherboard as the P5K, the P5K3 also added support for DDR3 modules along with a slightly revised chipset cooling layout.

So when we managed to get our hands on both boards along with some cream-of-the-crop DDR2 and DDR3 memory modules, we couldn't help but wonder what the performance difference between these two motherboards and more importantly the two memory technologies (DDR2 and DDR3) would be.

So to summarise, today's review is going to be a bit of a mixed bag. Firstly we're going to take a brief look at the P5K3, and then we're going to load both motherboards up with some DDR2 and DDR3 memory modules, run some benchmarks at the the highest native memory speeds and analyse the results. For those who want more detailed information on the P5K3 motherboard, check out our P5K review here as both boards share exactly the same layout.


Before we get down to the nitty gritty and bust the P5K3 out of it's packaging, let's take a quick look at the subtle differences in specs between the two boards using the information taken from Asus's website.

 Asus P5K3
Asus P5K
Supported CPU's
LGA775 socket for Intel® Core™2 Quad / Core™2 Extreme / Core™2 Duo / Pentium® Extreme / Pentium® D / *Pentium® 4 Processors
Compatible with Intel® 05B/05A/06 processors
Support Intel® next generation 45nm multi-core CPU
*This motherboard supports FSB 1333/1066/800
ChipsetIntel® P35 / ICH9R with Intel® Fast Memory Access Technology
Front Side Bus
1333 / 1066 / 800 MHz
4 x DIMM, max. 8GB, DDR3 1333 /1066 / 800 MHz4 x DIMM, max. 8GB, DDR2 1066 / 800 / 667 MHz
Expansion Slots
2 x PCI-E x16 (blue @ x16 mode, black @ x4 or x1 mode) supports CrossFire Technology
2 x PCI-E x1
3 x PCI
- 6 x SATA 3.0 Gb/s ports
- Supports RAID 0 and 1
JMicron® JMB363 PATA and SATA controller
- 1 x UltraDMA 133/100/66 for up to 2 PATA devices
- 2 x External SATA 3.0 Gb/s port (SATA On-the-Go)
- Supports SATA RAID 0,1 and JBOD
LANDual Gigabit LAN controllers, featuring AI NET2
Marvell88E8056® PCI-E Gigabit LAN controllers
RealtekRTL8110SC® PCI Gigabit LAN controller
Wireless Lan
54 Mbps IEEE 802.11g and backwards compatible with 11 Mbps IEEE 802.11b
- Software Access Point mode
- Station mode : Infrastruceure mode and Ad-Hoc mode
ADI® AD1988B 8-channel High Definition Audio CODEC
- Coaxial / Optical S/PDIF out ports at back I/O
- ASUS Noise Filter
IEEE 1394
Agere® FW322 1394a controller supports 2 x IEEE 1394a ports (one at midboard; one at back panel)
10 x USB 2.0 ports (4 ports at mid-board, 6ports at back panel)

As mentioned previously, there really is very little difference between the P5K and P5K3 motherboards apart from their support for different memory technologies (as highlighted above in Orange). However, for the sake of taking some pictures, let's move on to the next page where we can get a closer look at the P5K3 in all it's glory.
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Most Recent Comments

16-07-2007, 07:56:34

"After reviewing the Asus P5K DDR2 based motherboard just over a month ago, we were left wondering how the DDR3 based P5K3 would compare. Today we're back with both boards in a head to head DDR2 vs DDR3 battle!"


16-07-2007, 08:02:31

looks the same as the ddr vs ddr2 when it came out too me...

Nice job jim.Quote

16-07-2007, 09:58:45

Mr. Smith
Originally Posted by name='Ham'
looks the same as the ddr vs ddr2 when it came out too me...
I wasn't into pc's back then so I don't have any experience with ddr.

Is it safe to say that ddr2 now owns ddr in terms of performance?

I'm wondering if it is simply a matter of time before ddr3 really comes on with speeds of 2ghz and 5-5-5-15 timings and puts the nail in ddr2's coffin...

Nice work btw. I for one won't be buying a new mobo/ram until nehlam by the looks of this.

I was toying with getting another 2gb kit of cellshocks in the next month. Not sure what benefit I would get with 32bit XP pro... Hmmm.Quote

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