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BUFFALO PC4300 (DDR533 – 266MHz) CL2.5

Pence per Megabyte - 24.59

Torture Test at 200MHz – Passed

Torture Test Overclocked - Passed

Based in Japan with a sister company in the USA, BUFFALO has been in the memory business since its founding back in 1975.

The modules we were supplied were assembled in Ireland using Hynix HY5DU56822BT -D43 memory chips which, according to the Hynix website are only rated to 200MHz at CL3.0 rather than 266MHz at CL2.5. The modules also carry a lifetime warranty.

BUFFALO specified no timings other than the CAS Latency, though Hynix suggests 3-4-4-. No voltage was specified so we’ve assumed a JEDEC compliant 2.6v for standard operation. No heat spreaders were employed on these modules.

First Impressions

Buffalo’s modules come packed in a semi-rigid two-part blister pack, which offers adequate protection as well as allowing visual inspection.

A traditional green PCB with 16-wire bonded TSOP chips makes for a rather traditional and unspectacular looking module, though if looks aren’t important to your particular application needs this is a moot point. A small sticker is attached which gives information on the part number and CL rating as well as a batch number. Removing this sticker voids your warranty.

No attempt has been made to disguise or re-brand the Hynix chips used

Testing – 200MHz

Rank When Tested on a Prescott CPU at 200MHz: 5th from 18

Rank When Tested on a Northwood CPU at 200MHz: 4th from 18

Of all the brands on test Buffalo is probably the one with which I’ve had the least experience, and despite its unassuming looks, its stock 200MHz performance was excellent on both our Northwood and Prescott CPU platforms. Read speeds in particular seemed strong across the board.

Testing – Overclocking

Maximum Frequency - Overclocked using SPD settings: 220MHz

Maximum Frequency - Overclocked using manual settings (CL-4-4-8) low ambient of 18c: 260MHz

Maximum Frequency - Overclocked using manual settings (CL-4-4-8) high ambient of 28c: 260MHz

Rank - overclocked performance (high ambient): 3rd from 18

Using the programmed SPD settings, I was only able to run this memory at a maximum of 220MHz regardless of the voltage used. This is significantly short of its official rating of 266MHz.

Manually setting the timings to 2.5-4-4-8 gave a healthy boost, allowing me to make it to 260MHz, which is still 6MHz below its rated speed. Despite this it made a strong showing ranking third in overclocked performance terms, which is roughly where it should be as it is the third fastest module on test. For the record, none of the other high-speed memory quite made it to their proposed lofty heights on this particular setup under raised ambient temperatures.


Overall Rank, all performance parameters included: Joint 2nd from 18

Buffalo’s wireless products have quite a strong presence in the UK; however when it comes to finding a retailer who stocks its memory, things become much more difficult. For a brand with such a relatively low profile the performance was admirable. If this is representative of the general performance these modules offer then maybe Buffalo needs to spend a little more of its marketing budget on brand image in Europe. Overall, a very strong product.

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