Core i7-4770

Historical Anecdote

One of the biggest generations ever made by Intel in terms of new features & instructions.
2nd biggest only to AMD Athlon 64 -- invention of x86-64 architecture itself !
It has added AVX2, BMI, HLE , RTM, FMA3, MOVBE, zero-latency register moves,
and more.
HLE - Hardware Lock Elision, a backward compatible set of prefixes that can be applied to instructions such as LOCK CMPXCHG to minimize lock overhead under low contention
RTM - Restricted Transactional Memory, the feature I've anticipated the most, the ability to atomically roll back a block of code or atomically commit a block of code
BMI - Bit Manipulation Instructions, this is a set of about a dozen new 32-bit and 64-bit integer operations designed to perform Hacker's Delight type of bit manipulation instructions, bitfield operations, and flag-less shifts and multiplies. These are designed to accelerate encryption and handling of non-byte aligned data, such as processing bit vectors, decoding instructions, or performing bitfield moves.
AVX2 - what SSE2 was to SSE, AVX2 is to AVX, adding 256-bit packed integer operations to the AVX instruction set
FMA3 - Fused-Multiply-Add support permits common floating operations such as dot product and matrix multiply to execute multiply+add in one instruction
a 4th ALU - up to 4 integer ALU operations can retire per clock cycle, leading to peak integer performance of over 14000 MIPS per core, definitely something that helps legacy code
MOVBE - Move Big Endian load/store support, previously only available on the Atom, specifically helps to accelerate simulators of big endian machines such as 68040 and PowerPC.
zero-latency register moves - common register-to-register move operations are handled by the register renamer instead of wasting an ALU operation, speeding up register calling convention
Read "Haswell's great leap forward":
http://emulators.com/docs/nx36_haswell_262.htm

EvoBench Measurements

5 result(s) recorded for this family.
Flagship: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
ST score/GHz: 735 · MT score/Watt: 167

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