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Winbond returns - TwinMos PC3200 with "Winbond UTT"
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Old 20th January 2005, 14:18   #1
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Winbond returns - TwinMos PC3200 with "Winbond UTT"

Most of you already know about these so called "Winbond UTT" a.ka CH-5 a.k.a BH-4 chips that run like legendary Winbond "B" series. These chips donīt have anything to do with discontinued Winbond "B" series, but they actually are improved "C" die chips made with 0.13ĩ process (compared to "B" die 0.175ĩ process).

Original Winbond "C" series never was popular among enthusians, since the chip didnīt work with Ras to Cas 2. After Winbond stopped to make DDR memory in last quater of 2004, their DDR business was transfered to Winbondīs cooperatives Infineon, Mosel Vitelic and ProMos. In this article I call this alliance as Infineon group.

In late of November 2004 pictures of naked (heatspreaders removed) OCZ Voltage eXtreme sticks hit the forums. People who had hunted down underflowing BH-5 sources immediately regonized two dots in the package of the chip. Those dots are almost Winbondīs trademark, since it was only manufacturer that had those dots on their chips. Rumours about Winbondīs return to memory business started to roam among enthusians.

Soon later that, I noticed some ProMos SAT5B chips on Kingston ValueRam sticks that also had those famous two dots. Unfortunately these chips didnīt overclock with 2-2-2-5 settings at all so I forgot this whole thing until now...
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