Dell XPS 1530 Specifications
Display: 15.4″ TFT LCD (Glossy)
Aspect Ratio: 16:10
Pixel Format: 1440 x 900
GPU: NVIDIA GeForce 8600M GT with 256MB
CPU: 2.1GHz Intel Core 2 Duo T8100 (800MHz FSB, 3MB L2 Cache)
RAM: 4GB
HDD: 320GB 5400RPM SATA
Optical: Slot Load DVD+/-RW
Price: MSRP US$1661 ($1099 ends 2008.12.07)

According to NotebookCheck.com (that’s where the cool image is from) the Dell XPS [...]

Dell Vostro 2510 Specifications
Display: 15.4″ Wide TFT LCD
Aspect Ratio: 16:10
Pixel Format: 1440 x 900 or 1920 x 1200
GPU: 256MB NVIDIA GeForce 8400M GS
CPU: 1.8, 2.0, 2.60GHz Intel Core 2 Duo T5670, T5870, T9500, 2/2/6MB L2 Cache, 800MHz FSB
RAM: Up to 4GB 667MHz DDR2 SDRAM
HDD: 160GB (5400RPM), 250GB (7200RPM), 320GB (5400RPM)
Optical: Slot Load 8x DVD+/-RW or [...]