SN-1897 已核对来源，附原文与上下文。
这么大的速度差距，4 到 6 倍，感觉更像是老芯片在处理某个别扭的弱点或指令时特别慢，而非 i5 把 SSE2 吹成了六倍快的卖点。
That big of a difference in speed, by a factor of 4 or 6, feels like it's likely to be some quirky weak spot or instruction that the old chip is slow with. Unless it's a touted feature of the i5 that they made SSE2 six times faster.
简单汇总一下：
A quick summary:
Xeon Quad 慢 41%
Xeon Quad 41% slower
Core 2 Duo 慢 55%
Core 2 Duo 55% slower
Core 2 Duo 持平 (vess)
Core 2 Duo same (vess)
Core 2 Quad 慢 50%
Core 2 Quad 50% slower
Core i5 快 200% (nelisky)
Core i5 200% faster (nelisky)
Core i5 快 100% (vess)
Core i5 100% faster (vess)
AMD Opteron 快 105%
AMD Opteron 105% faster
aceat64:
aceat64:
我的系统从约 7100 降到了约 4200。
My system went from ~7100 to ~4200.
这台机器配的是双 Intel Xeon 四核 CPU (E5335) @ 2.00GHz。
This particular system has dual Intel Xeon Quad-Core CPUs (E5335) @ 2.00GHz.
impossible7:
impossible7:
在一台跑 x86_64 linux 的 Intel Core 2 Duo T7300 上，相比官方版本 (r121) 慢了 55%
on an Intel Core 2 Duo T7300 running x86_64 linux it was 55% slower compared to the stock version (r121)
nelisky:
nelisky:
我的 Core2Quad (Q6600) 慢了 50%,
My Core2Quad (Q6600) slowed down 50%,
我的 i5 提升了约 200%,
my i5 improved ~200%,
impossible7:
impossible7:
在一台跑 x86_64 linux 的 AMD Opteron 2374 HE 上，我得到了 105% 的提升 (!)
on an AMD Opteron 2374 HE running x86_64 linux I got a 105% improvement (!)
