---
title: Adobe Photoshop CS4 Supports 64-Bit For Windows Only
date: 2008-04-03 23:33:56
modified: 2012-04-23 18:09:07
permalink: https://lesterchan.net/blog/2008/04/03/adobe-photoshop-cs4-supports-64-bit-for-windows-only/
author: Lester Chan
categories:
  - Software
tags:
  - "4"
  - 64bit
  - Adobe
  - Creative Suite
  - CS4
  - Photoshop
---

Adobe Creative Suite 4 will support 64bit OSes running Windows, whereas for Mac, it will still be 32bit only. When Adobe Creative Suite 5 comes, it will support both 64bit OSes in Windows and Mac.

> What’s Adobe doing with Photoshop? In the interest of giving customers guidance as early as possible, we have some news to share on this point: in addition to offering 32-bit-native versions for Mac OS X and 32-bit Windows, just as we do today, we plan to ship the next version of Photoshop as 64-bit-native for Windows 64-bit OSes only.
> 
> The development is frankly bittersweet for us: On the one hand we’re delighted to be breaking new ground with Photoshop, and when processing very large files on a suitably equipped machine, Photoshop x64 realizes some big performance gains. (For example, opening a 3.75 gigapixel image on a 4-core machine with 32GB RAM is about 10x faster.) On the other hand, we work very hard at maintaining parity across platforms, and it’s a drag that the Mac x64 revision will take longer to deliver. We will get there, but not in CS4. (Our goal is to ship a 64-bit Mac version with Photoshop CS5, but well be better able to assess that goal as we get farther along in the development process.)

Source: [John Nack on Adobe: Photoshop, Lightroom, and Adobe’s 64-bit roadmap](http://blogs.adobe.com/jnack/2008/04/photoshop_lr_64.html)