Let’s analyze the Radeon R7 250 Core Edition (R7-250A-ZLF4) from the traditional manufacturer XFX, a low profile video card with 1 GiB of GDDR5 memory that competes with the GeForce GT 640 GPU from NVIDIA.

The Radeon R7 250 is a rebranded Radeon HD 8670 chip, although according to AMD, the HD 8670 is compatible with DirectX 11.1 and the R7 250 is DirectX 11.2.

It is important to notice that there are video cards based on the Radeon R7 250 GPU using DDR3 memory running at 1.8 GHz (providing a 28.8 GB/s bandwidth).

The Radeon R7 250 uses the PCI Express 3.0 interface, while its main competitor uses the PCI Express 2.0 interface. Although the chip supports PCI Express 3.0 x16, the video card we tested offers only half of the supported lanes and, therefore, it is a PCI Express 3.0 x8 card.

In the table below, we compare the main specifications for the video cards included in our review. The prices were researched at on the day we published this review and do not include rebates.

Video Card Core Clock Shader Clock Memory Clock (Effective) Memory Interface Memory Transfer Rate Memory Shaders DirectX Price
Radeon R7 250 1,050 MHz 1,050 MHz 4.6 GHz 128-bit 73.6 GB/s 1 GiB GDDR5 384 11.2 USD 100.00
GeForce GT 640 900 MHz 1,800 MHz 1.6 GHz 128-bit 25.6 GB/s 2 GiB DDR3 384 11.0 USD 100.00
Radeon R7 240 780 MHz 780 MHz 1.8 GHz 128-bit 28.8 GB/s 2 GiB DDR3 320 11.2 USD 70.00
GeForce GT 630 810 MHz 1,620 MHz 1.33 GHz 128-bit 21.3 GB/s 1 GiB DDR3 96 11.0 USD 70.00

You can compare the specs of these video cards with other video cards by taking a look at our “AMD ATI Chips Comparison Table” and “NVIDIA Chips Comparison Table” tutorials.

Now let’s take an in-depth look at the XFX Radeon R7 250 Core Edition.


Rafael Otto Coelho is a physicist with a master’s degree in Education, and is a college professor in Brazil.