It isn't all about the clock speed. The new rMBP will be faster than what you have now. But I'd definitely go with 8GB RAM, as you can't upgrade it later on like you can on your current model.
It isn't all about the clock speed. The new rMBP will be faster than what you have now. But I'd definitely go with 8GB RAM, as you can't upgrade it later on like you can on your current model.
In the same vein as PDFierro's response, ghz comparison on paper isn't accurate. Haswell is more efficient at what it does, allowing more "work" done by the CPU with "less ghz".
His recommendation on ram is spot on...but if you're getting a deal you wouldn't afford otherwise maybe it's worth the plunge?