It would not be dramatic, unless you somehow had the combination of a fast drive interface (like on a modern system), and a serious lack of ram. You don't generally need swap except as a way to efficiently use ram (by swapping out less used blocks of memory), or as a way to handle not having enough ram (there's a third scenario, let me come to it). Swapping out less used memory shouldn't benefit significantly from faster storage. Swapping out memory to adjust for a lack of ram shouldn't happen on a well designed system, and more ram is generally a better investment than an SSD.
You may also use a pagefile to suspend - here, you may see a benefit from a fast page file.
In short, I don't see many scenarios where a small, separate drive will show benefits of any sort on a well designed system
Yes. Use Corsair Neutron Series GTX 120GB 6Gbps 2.5-Inch SATA 3 http://www.storagereview.com/corsair_neutron_gtx_ssd_review 120GB - Sequential Read 555MB/s Sequential Write 330MB/s 240GB - Sequential Read 555MB/s Sequential Write 511MB/s
– STTR – 2013-05-04T13:59:09.807If you spend that memory on RAM, you won’t need swapping. Unless you are doing some crazy scientific calculation. – Chronial – 2013-05-04T15:04:43.237