9500GT beats GT220 like crazy??

[zim2dive]

Doing a system upgrade on another machine, I had a spare GT220 to play with: http://www.newegg.com/Product/Product.aspx?Item=N82E16814127455

by most reviews (http://www.videocardbenchmark.net/gpu_list.php), its supposed to be _marginally_ better than the 9500GT (http://www.newegg.com/Product/Product.aspx?Item=N82E16814127419) I am currently using. (460 vs 361 on the passmark site) (FWIW, in case anyone wants to use this card, I plugged in the 220 and it came right up.)

But when I ran Xbench, I see (green is the 9500GT, red is the GT220)

Quartz 268.95 -> 191.70
OpenGL 187.51-> 151.08

any ideas why its doing so badly compared to the 9500?

[uwannacookie]

Gt220 = 9400 gt
gt240 = 9500 gt
gts250 = 9600 gt

[zim2dive]

Gt220 = 9400 gt
gt240 = 9500 gt
gts250 = 9600 gt

that agrees with what I see in practice.. but according to Passmark (http://www.videocardbenchmark.net/gpu_list.php), the 220 should beat the 9500?1!?!?

[mm67]

Gt220 = 9400 gt
gt240 = 9500 gt
gts250 = 9600 gt

Actually GTS 250 = 9800GTX+