3DNow!
3DNow! is a multi-media Instruction set developed by AMD. It is introduced in 1997 with the K6-2. This technology based on the operations SIMD (Individual Multiple Instruction Dated), has thus the role to accelerate the treatment of the processor.
It gathers 21 instructions and 8 Registre S 64 Bits FP/MX. Each instruction 3DNow! allows to treat up to 2 whole or floating operations per cycle of clock. What doubles in theory the performances. Current implementation of the 3DNow! in processors AMD, allows to carry out up to 2 instructions 3DNow! by cycle of clock when they are for example two additions or two multiplications. One thus arrives, in theory, with performances multiplied by 4.
The 3DNow! was creates by AMD for stage the weakness of its K6 in calculations in Floating decimal point. The performances on the matter indeed started to become increasingly crucial for the plays and the applications multimedia and Intel had taken a great lead on the matter with its Pentium II. The 3DNow! was thus used as palliative to AMD while waiting for Athlon.
The equivalent of Intel to the 3Dnow! is the SE which is similar but incompatible.
List compatible CPU 3DNow! (except AMD)
VIA- C5A - Samuel: MX, 3DNow!
- C5B - Samuel 2: MX, 3DNow!
- C5C - Ezra (- T): MX, 3DNow!
Transmeta Corporation
See too
External bonds
- Fair With the Questions about Technology AMD 3DNow! ™
- Technical informations
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