---
layout: forum
title: 'Re: 0.3 almost ready'
grand_parent: Forum Posts
parent: Bitcoin Forum
nav_order: 142
date: 2010-06-25 14:10:06 UTC
original: https://bitcointalk.org/index.php?topic=199.msg1769#msg1769
---

# Re: 0.3 almost ready

---

```
Re: 0.3 almost ready
June 25, 2010, 02:10:06 PM

Thanks virtualcoin, that's a perfect comparison.

The 8% speedup from 32-bit Windows (2310k) to 32-bit Linux (2500k) is probably from the newer version of GCC on Linux (4.4.3 vs 3.4.5).

The 15% speedup from 32-bit to 64-bit Linux is more of a mystery.  The code is completely 32-bit.

Hmm, I think the 8 extra registers added by x86-64 must be what's helping.  That would make a significant difference to SHA if it could hold most of the 16 state variables in registers.
```