NVIDIA say that the GTS 450 goes up against the HD 5750. While this may hold true for some variations of the model, it's clear that like the GTX 460 companies are going to offer some pretty hardcore OC models which in turn is going to increase the price. The Galaxy version is a key example; the price of the GTS 450 should be around $129 US which would put it smack on with the HD 5750. The decision for Galaxy to upgrade the memory and overclock the card means that the price has gone up to $150 US which is closer to the HD 5770.
The GTS 450 follows the winning formula that was seen in the GTX 460; offer a card that's priced well and give lots of headroom for companies to take advantage of. An AMD / NVIDIA partner said to me the other day on the topic of overclock ability that AMD is too strict and are ultimately shooting themselves in the foot.
This is so true; you just have to think about it. The GTS 450 carries with it a core clock of 783MHz and memory clock of 3600MHz QDR for around $129. Now, Galaxy is offering us 888MHz core clock and 4000MHz QDR for around $149. Say NVIDIA offered the GTS 450 at 850MHz / 4000MHz QDR for $139 and Galaxy offered exactly the same; the card doesn't look as impressive. It's no different, it's just the perception of the product.
We've been told, but yet to test that we should see above 900MHz out of the GTS 450. Again, you look at an overclocked card and 783MHz to 900MHz looks a lot better than 850MHz to 900MHz. NVIDIA are giving us a chance to really play with these cards; it's in turn creating so much more buzz around the models.
We have to ask, is the GTS 450 as good as the GTX 460? The card that has ultimately set the bar for value lately. The answer to that is yes, but only if you're gaming around the 1680 x 1050 mark. NVIDIA say the model is aimed at 22" and lower monitor users, so 1680 x 1050 and lower. Really, for the most part it doesn't have any issue with most games at this resolution. Some of the brand new ones, though, are going to need a little detail drop. That's to be expected at this price point, especially with how good some of these new games look.
The surprise was of course the fact that we were able to play a few games at 1920 x 1200, especially some of the older ones which is worth knowing. What it all comes down to, though, is if you've got $150, what do you spend your money on, The HD 5770 or the GTS 450? You'd have to lean towards the GTS 450. Performance between the models is similar, and yes, the GTS 450 does draw a little more power, but it's a low number anyway. The bottom line is that you would rather be sporting something new, and not something that's been around for over six months. If the HD 5770 was a clear winner then sure you would continue to buy that model. If you don't have any brand loyalty, though, and just want to buy the best card for your money, the chances are you'll probably lean more towards the GTS 450. And if you're looking for a fancy version of one, the Galaxy Super OC one is worth checking out, especially since Super OC means more than just a 25MHz overclock; it's a 100MHz+ increase on the core, 400MHz QDR increase on the memory and just faster memory.