The main features of Sempron 3400+ we reviewed are:

• OPN*: SDA3400AIO3BX
• Internal clock: 2 GHz
• Memory clock: 400 MHz (200 MHz DDR)
• HyperTransport bus clock: 1,600 MHz (800 MHz DDR)
• L1 memory cache: 128 KB
• L2 memory cache: 256 KB
• Voltage: 1.40 V
• Maximum temperature: 69º C (156.2º F)
• Thermal power: 62 W
• Manufacturing process: 90 nm
• Core: Palermo
• 64-bit extensions enabled
• Memory controller: Single channel

(*) OPN, Ordering Part Number, is the number that is written on the CPU body.

click to enlarge
Figure 3: Technical specs from the reviewed Sempron 3400+.

The Palermo core introduced the 64-bit instructions to the Sempron family. However, there are Sempron processors based on this core that don’t have this instruction set enabled. The CPUs based on the Palermo core that have the 64-bit extensions use the letters “BX” as the two last letters on the CPU OPN.

Another feature introduced on Palermo core is the SSE3 instruction set, not available on Sempron processors based on previous core (Paris, based on 130 nm technology).