which is the best graphic card for old Core i5 3570k without getting bottleneck?

[sstiven]

In 2012 I built a pc using:

Intel Core i5-3570K Quad-Core Processor 3.4 GHz 4 Core LGA 1155 - BX80637I53570K

Cooler Master Hyper 212 EVO CPU Cooler with 120mm PWM Fan (RR-212E-20PK-R2)

AMD Radeon HD 7850 2GB

Corsair 16 GB Vengeance Blue Low Profile 1600mhz PC3-12800 240-pin Dual Channel DDR3 Memory Kit 16 Dual Channel Kit - CML16GX3M4A1600C9B

Gigabyte Intel Z77 LGA 1155 AMD CrossFireX/NVIDIA SLI W/HDMI, DVI Dual UEFI BIOS ATX Motherboard GA-Z77X-D3H

Seagate ST2000DM001 Barracuda 7200RPM 2 TB SATA 6 GB/s NCQ 64 MB Cache 3.5-Inch Internal Bare Drive

Crucial 128 GB m4 2.5-Inch Solid State Drive SATA 6Gb/s CT128M4SSD2 -> changed for a Sand Disk Ultra II 240 GB

Thermaltake V4 Black Edition Case with 600Watt PSU

One of the four ram modules just stopped working, and I don't want to build a new pc from scratch. I have two question, 1) I have not been able to get the same ram module, which should I buy? 2) I want to know which is the best Graphic Card that I can use with this hardware without getting bottleneck, which are your recommendations?

Any suggestion will be very appreciated.

 

[volkgren]

I'd go for a GTX 1060 6GB or RX 580 8GB.

You should run all the same RAM. So if you're not cool with just using your 3 sticks, then the best thing to do is sell what RAM you have and buy a new 2x8GB kit.

This would be a good kit to buy if you wanted faster RAM, but any decent DDR3 1600 kit would do also.
Memory: G.Skill - Ripjaws X Series 16GB (2 x 8GB) DDR3-2133 Memory ($124.98 @ Newegg)