NVIDIA Geforce GTX 650 Ti Reviewccokeman - October 9, 2012
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When you look at this card it looks, for all intents and purposes, like the GTX 650. It's under the skin where the differences lie with the change to a GK106-based core instead of GK107. The PCB measures 5.75 inches or just .75" shorter than the PCB used on the reference GTX 670. This small size will open up chassis selection options, especially for small form factor builds. A small 80mm fan sits atop the aluminum heat sink to handle the thermal load. You can see that the fan shroud has the GeForce GTX designation on it letting you know that this card is part of the gaming series of cards. This card is built to comply with the PCIe 3.0 specification, is backwards compatible, and is designed to be used in a 16x PCIe slot. Just for comparisons sake I pulled out an old 9600GT for a then and now comparison that shows how the foot print for performance has changed over the past four years with the GTX 650 Ti packing up to five times the video firepower of the popular at the time 9600GT.
Connectivity options for the GTX 650 Ti include a pair of Dual Link DVI ports and an HDMI 1.4a compatible Mini HDMI port. While this configuration does not support, it the GPU supports up to four monitors with some of the AIB partners making use of the feature. Mounting is via a single slot bracket although the card physically will occupy a pair of slots. There is no venting through the rear of the chassis with the single slot mount. The thermal dump will be into the chassis but with as little heat as the GTX 650 Ti unloads this should not be a concern. Modern chassis have enough airflow to manage this thermal dump. At the rear of the GTX 650 Ti is the 6-pin PCIe power connection used to provide the power needs for the GTX 650 Ti. A TDP of 110 watts leaves plenty of power overhead. NVIDIA recommends a power supply of at least 400 watts for use with this card.
Removing the heat sink gives a look at the PCB and how the components are laid out. Everything is passively air cooled on the PCB with the exception of the core that uses a small aluminum heat sink. Four GDDR5 modules surround the socket area and make up the 1GB of frame buffer. The cooling solution employed on this reference GTX 650 Ti is more than capable of handling the thermal load generated by the GK106 core. A Cooler Master 80mm x 15mm Axial fan part number FY08015M12LAA is used to provide the airflow through the heat sink. This PWM fan design runs at up to 3100RPM delivering up to 26.25 CFM.
The GTX 650 Ti is equipped with NVIDIA's 28nm 2.54 Billion transistor Kepler GK106 core. This implementation has been reduced to a pair of Graphics Processing Clusters with four SMX all equipped with 192 CUDA cores to make up the 786 core count. Texture unit count is 64 with 16 ROPs. On board is a total of 1GB of GDDR5 memory running through a 2 x 64 bit bus. Hynix supplies the memory modules used on this GTX 650 Ti part number H5GQ2H24AFR-R0C and are rated for operation at 1500MHz yet are conservatively clocked to 1350MHz (5400MHz effective) on the GTX 650 Ti. Base clock speed on the GTX 650 Ti is a conservative 925MHz, and without the support of GPU Boost that core speed will be the starting point for any overclocking.
Gaming at 1080p is what this card was designed for so let's see just how well it does with the OCC test suite.