It will be a nice boost from AGA, but then of course you'll
loose a lot of compatibility with the things that make an AGA
1200 such a fun machine...like easily watching demos.

Anyhow -- P96 Speed is (IMO) a good amiga graphics benchmark.
You can see the results of some Voodoo - equipped machines at
the above mentioned site, and, just for comparison, I include
here first the results of my old AGA/060 setup, and follow
it up with the same tests performed on a G3 Pegasos II.
.-----------------------------------------.
| Computer......: Amiga 1200/AGA |
| CPU...........: 68060/66 MHz |
| OS / WB.......: V20217.248/V45.3 |
| SetPatch......: V44.38 |
| Chip/Fast.....: ~2.0MB/63.5MB |
| Graphics card.: NO GRAPHICS CARD |
| GFX system....: AmigaOS |
| Resolution....: 724 x 482 x 8 |
| Depth/Colors..: 256 colors |
| Testlength....: 13 |
+-----------------------------------------+
.============= SPEEDRESULTS ==============.
| RectFill()................ 74 op/s |
| RectFill() Pattern........ 69 op/s |
| WritePixel().............. 47574 op/s |
| WriteChunkyPixels()....... 195 op/s |
| WritePixelArray8()........ 188 op/s |
| WritePixelLine8()......... 12511 op/s |
| DrawEllipse()............. 313 op/s |
| DrawCircle().............. 335 op/s |
| Draw().................... 115 op/s |
| Draw() Hor/Ver............ 376 op/s |
| ScrollRaster() X.......... 5 op/s |
| ScrollRaster() Y.......... 6 op/s |
| PutText()................. 1643 op/s |
| BlitBitMap().............. 185 op/s |
| BlitBitMapRastPort()...... 182 op/s |
| BitMapScale()............. 46 op/s |
|--------------- Intuition ---------------|
| OpenWindow().............. 22 op/s |
| MoveWindow().............. 26 op/s |
| SizeWindow().............. 22 op/s |
| CON-Output................ 96 op/s |
| ScreenToFront()........... 61 op/s |
`========================================='
(edited header to provide correct system desc.)
.-----------------------------------------.
| Computer......: Pegasos II |
| CPU...........: PPC750CXe/600 MHz |
| OS / WB.......: V4113.35392/V50.1 |
| SetPatch......: N/A |
| Chip/Fast.....: ~2.0MB/223.5MB |
| Graphics card.: Radeon 9000 |
| GFX system....: CyberGraphX 4 |
| Resolution....: 800 x 600 x 16 |
| Depth/Colors..: 65536 colors |
| Testlength....: 10 |
+-----------------------------------------+
.============= SPEEDRESULTS ==============.
| RectFill()................ 41573 op/s |
| RectFill() Pattern........ 4120 op/s |
| WritePixel().............. 482152 op/s |
| WriteChunkyPixels()....... 1455 op/s |
| WritePixelArray8()........ 1455 op/s |
| WritePixelLine8()......... 82163 op/s |
| DrawEllipse()............. 88733 op/s |
| DrawCircle().............. 91335 op/s |
| Draw().................... 104845 op/s |
| Draw() Hor/Ver............ 183959 op/s |
| ScrollRaster() X.......... 2212 op/s |
| ScrollRaster() Y.......... 2152 op/s |
| PutText()................. 73133 op/s |
| BlitBitMap().............. 41594 op/s |
| BlitBitMapRastPort()...... 34950 op/s |
| BitMapScale()............. 563 op/s |
|--------------- Intuition ---------------|
| OpenWindow().............. 337 op/s |
| MoveWindow().............. 5909 op/s |
| SizeWindow().............. 5945 op/s |
| CON-Output................ 3743 op/s |
| ScreenToFront()........... 7544 op/s |
`========================================='