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SSE4 (Streaming SIMD Extensions 4) is a SIMD CPU instruction set used in the Intel Core microarchitecture and AMD K10 (K8L).It was announced on September 27, 2006, at the Fall 2006 Intel Developer Forum, with vague details in a white paper; [1] more precise details of 47 instructions became available at the Spring 2007 Intel Developer Forum in Beijing, in the presentation. [2]
AMD added a subset of SSE, 19 of them, called new MMX instructions, [3] and known as several variants and combinations of SSE and MMX, shortly after with the release of the original Athlon in August 1999, see 3DNow! extensions. AMD eventually added full support for SSE instructions, starting with its Athlon XP and Duron (Morgan core) processors.
All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, F16C, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), TXT, Intel VT-x, Intel EPT, Intel VT-d, Intel VT-c, Intel x8 SDDC, Hyper-threading (except E5-2403 v2 and E5-2407 v2), Turbo Boost (except E5-2403 v2, E5-2407 v2 and E5-2418L v2), AES-NI, Smart Cache.
Based on Penryn microarchitecture; Chip harvests from Yorkfield with half L2 cache disabled; All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Enhanced Intel SpeedStep Technology (EIST), Enhanced Halt State (C1E), Intel 64, XD bit (an NX bit implementation), Intel VT-x
Support for CPUID can be checked by toggling bit 21 of EFLAGS (EFLAGS.ID) – if this bit can be toggled, CPUID is present. Usually 3 [f] Intel Pentium, [g] AMD 5x86, [g] Cyrix 5x86, [h] IDT WinChip C6, Transmeta Crusoe, Rise mP6, NexGen Nx586, [i] UMC Green CPU: CMPXCHG8B m64: 0F C7 /1: Compare and Exchange 8 bytes. Compares EDX:EAX with m64.
GFNI is a standalone instruction set extension and can be enabled separately from AVX or AVX-512. Depending on whether AVX and AVX-512F support is indicated by the CPU, GFNI support enables legacy (SSE), VEX or EVEX-coded instructions operating on 128, 256 or 512-bit vectors.
SSSE3 was first introduced with Intel processors based on the Core microarchitecture on June 26, 2006 with the "Woodcrest" Xeons.. SSSE3 has been referred to by the codenames Tejas New Instructions (TNI) or Merom New Instructions (MNI) for the first processor designs intended to support it.
^ All models support AMD Turbo Core, v2.0 for BULLDOZER and v3.0 for PILEDRIVER. ^ The clock multiplier is applied to the 200 MHz HyperTransport base clock. ^ A line of Socket F and Socket AM2 processors launched in 2006 were named Athlon 64 FX, the first being the AMD FX-60.